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Finding the Fourth Proportional to 732.68, 1,098.96 and 386

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Solution

The fourth proportional to 732.68, 1,098.96 and 386 is: 578.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    732.68 : 1,098.96 = 386 : x
  2. Step 2: Convert to fraction form
    732.68/1,098.96 = 386/x
  3. Step 3: Cross multiply
    732.68x = 1,098.96 × 386
  4. Step 4: Simplify right side
    732.68x = 424,198.56
  5. Step 5: Solve for x
    x = 424,198.56/732.68
  6. Step 6: Final answer
    x = 578.97

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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.