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Finding the Fourth Proportional to 747.55, 1,032.09 and 550.72

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Solution

The fourth proportional to 747.55, 1,032.09 and 550.72 is: 760.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.55 : 1,032.09 = 550.72 : x
  2. Step 2: Convert to fraction form
    747.55/1,032.09 = 550.72/x
  3. Step 3: Cross multiply
    747.55x = 1,032.09 × 550.72
  4. Step 4: Simplify right side
    747.55x = 568,392.60
  5. Step 5: Solve for x
    x = 568,392.60/747.55
  6. Step 6: Final answer
    x = 760.34

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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.