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Finding the Fourth Proportional to 766.76, 1,058.10 and 435.14

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Solution

The fourth proportional to 766.76, 1,058.10 and 435.14 is: 600.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    766.76 : 1,058.10 = 435.14 : x
  2. Step 2: Convert to fraction form
    766.76/1,058.10 = 435.14/x
  3. Step 3: Cross multiply
    766.76x = 1,058.10 × 435.14
  4. Step 4: Simplify right side
    766.76x = 460,421.63
  5. Step 5: Solve for x
    x = 460,421.63/766.76
  6. Step 6: Final answer
    x = 600.48

Related Problems

Find fourth proportional to 383.38, 529.05 and 217.57
Half scale
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Double scale
Find fourth proportional to 767.76, 1,059.48 and 436.14
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.