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Finding the Fourth Proportional to 386.18, 532.76 and 293.38

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Solution

The fourth proportional to 386.18, 532.76 and 293.38 is: 404.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    386.18 : 532.76 = 293.38 : x
  2. Step 2: Convert to fraction form
    386.18/532.76 = 293.38/x
  3. Step 3: Cross multiply
    386.18x = 532.76 × 293.38
  4. Step 4: Simplify right side
    386.18x = 156,301.13
  5. Step 5: Solve for x
    x = 156,301.13/386.18
  6. Step 6: Final answer
    x = 404.74

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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.