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Finding the Fourth Proportional to 747.35, 1,030.96 and 432.60

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Solution

The fourth proportional to 747.35, 1,030.96 and 432.60 is: 596.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.35 : 1,030.96 = 432.60 : x
  2. Step 2: Convert to fraction form
    747.35/1,030.96 = 432.60/x
  3. Step 3: Cross multiply
    747.35x = 1,030.96 × 432.60
  4. Step 4: Simplify right side
    747.35x = 445,993.30
  5. Step 5: Solve for x
    x = 445,993.30/747.35
  6. Step 6: Final answer
    x = 596.77

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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.