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Finding the Fourth Proportional to 529.59, 793.32 and 432.18

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Solution

The fourth proportional to 529.59, 793.32 and 432.18 is: 647.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.59 : 793.32 = 432.18 : x
  2. Step 2: Convert to fraction form
    529.59/793.32 = 432.18/x
  3. Step 3: Cross multiply
    529.59x = 793.32 × 432.18
  4. Step 4: Simplify right side
    529.59x = 342,857.04
  5. Step 5: Solve for x
    x = 342,857.04/529.59
  6. Step 6: Final answer
    x = 647.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.