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Finding the Fourth Proportional to 1,528.49, 2,292.49 and 432.93

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Solution

The fourth proportional to 1,528.49, 2,292.49 and 432.93 is: 649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.49 : 2,292.49 = 432.93 : x
  2. Step 2: Convert to fraction form
    1,528.49/2,292.49 = 432.93/x
  3. Step 3: Cross multiply
    1,528.49x = 2,292.49 × 432.93
  4. Step 4: Simplify right side
    1,528.49x = 992,487.70
  5. Step 5: Solve for x
    x = 992,487.70/1,528.49
  6. Step 6: Final answer
    x = 649.33

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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.