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Finding the Fourth Proportional to 654.50, 902.40 and 432.96

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Solution

The fourth proportional to 654.50, 902.40 and 432.96 is: 596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.50 : 902.40 = 432.96 : x
  2. Step 2: Convert to fraction form
    654.50/902.40 = 432.96/x
  3. Step 3: Cross multiply
    654.50x = 902.40 × 432.96
  4. Step 4: Simplify right side
    654.50x = 390,703.10
  5. Step 5: Solve for x
    x = 390,703.10/654.50
  6. Step 6: Final answer
    x = 596.95

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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.