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Finding the Fourth Proportional to 497.76, 685.32 and 432.24

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Solution

The fourth proportional to 497.76, 685.32 and 432.24 is: 595.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.76 : 685.32 = 432.24 : x
  2. Step 2: Convert to fraction form
    497.76/685.32 = 432.24/x
  3. Step 3: Cross multiply
    497.76x = 685.32 × 432.24
  4. Step 4: Simplify right side
    497.76x = 296,222.72
  5. Step 5: Solve for x
    x = 296,222.72/497.76
  6. Step 6: Final answer
    x = 595.11

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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.