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Finding the Fourth Proportional to 1,472.98, 2,209.50 and 432.87

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Solution

The fourth proportional to 1,472.98, 2,209.50 and 432.87 is: 649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.98 : 2,209.50 = 432.87 : x
  2. Step 2: Convert to fraction form
    1,472.98/2,209.50 = 432.87/x
  3. Step 3: Cross multiply
    1,472.98x = 2,209.50 × 432.87
  4. Step 4: Simplify right side
    1,472.98x = 956,426.27
  5. Step 5: Solve for x
    x = 956,426.27/1,472.98
  6. Step 6: Final answer
    x = 649.31

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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.