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Finding the Fourth Proportional to 905.04, 1,248.72 and 532.08

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Solution

The fourth proportional to 905.04, 1,248.72 and 532.08 is: 734.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    905.04 : 1,248.72 = 532.08 : x
  2. Step 2: Convert to fraction form
    905.04/1,248.72 = 532.08/x
  3. Step 3: Cross multiply
    905.04x = 1,248.72 × 532.08
  4. Step 4: Simplify right side
    905.04x = 664,418.94
  5. Step 5: Solve for x
    x = 664,418.94/905.04
  6. Step 6: Final answer
    x = 734.13

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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.