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Finding the Fourth Proportional to 1,037.82, 1,432.18 and 572.07

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Solution

The fourth proportional to 1,037.82, 1,432.18 and 572.07 is: 789.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,037.82 : 1,432.18 = 572.07 : x
  2. Step 2: Convert to fraction form
    1,037.82/1,432.18 = 572.07/x
  3. Step 3: Cross multiply
    1,037.82x = 1,432.18 × 572.07
  4. Step 4: Simplify right side
    1,037.82x = 819,302.56
  5. Step 5: Solve for x
    x = 819,302.56/1,037.82
  6. Step 6: Final answer
    x = 789.45

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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.