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Finding the Fourth Proportional to 746.76, 1,030.24 and 481.18

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Solution

The fourth proportional to 746.76, 1,030.24 and 481.18 is: 663.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.76 : 1,030.24 = 481.18 : x
  2. Step 2: Convert to fraction form
    746.76/1,030.24 = 481.18/x
  3. Step 3: Cross multiply
    746.76x = 1,030.24 × 481.18
  4. Step 4: Simplify right side
    746.76x = 495,730.88
  5. Step 5: Solve for x
    x = 495,730.88/746.76
  6. Step 6: Final answer
    x = 663.84

Related Problems

Find fourth proportional to 373.38, 515.12 and 240.59
Half scale
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Double scale
Find fourth proportional to 747.76, 1,031.62 and 482.18
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.