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Finding the Fourth Proportional to 743.55, 1,026.11 and 448.77

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Solution

The fourth proportional to 743.55, 1,026.11 and 448.77 is: 619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    743.55 : 1,026.11 = 448.77 : x
  2. Step 2: Convert to fraction form
    743.55/1,026.11 = 448.77/x
  3. Step 3: Cross multiply
    743.55x = 1,026.11 × 448.77
  4. Step 4: Simplify right side
    743.55x = 460,480.54
  5. Step 5: Solve for x
    x = 460,480.54/743.55
  6. Step 6: Final answer
    x = 619.30

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Double scale
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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.