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Finding the Fourth Proportional to 653.72, 902.26 and 432.70

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Solution

The fourth proportional to 653.72, 902.26 and 432.70 is: 597.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.72 : 902.26 = 432.70 : x
  2. Step 2: Convert to fraction form
    653.72/902.26 = 432.70/x
  3. Step 3: Cross multiply
    653.72x = 902.26 × 432.70
  4. Step 4: Simplify right side
    653.72x = 390,407.90
  5. Step 5: Solve for x
    x = 390,407.90/653.72
  6. Step 6: Final answer
    x = 597.21

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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.