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Finding the Fourth Proportional to 410.22, 614.71 and 318.69

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Solution

The fourth proportional to 410.22, 614.71 and 318.69 is: 477.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.22 : 614.71 = 318.69 : x
  2. Step 2: Convert to fraction form
    410.22/614.71 = 318.69/x
  3. Step 3: Cross multiply
    410.22x = 614.71 × 318.69
  4. Step 4: Simplify right side
    410.22x = 195,901.93
  5. Step 5: Solve for x
    x = 195,901.93/410.22
  6. Step 6: Final answer
    x = 477.55

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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.