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Finding the Fourth Proportional to 460.43, 691.10 and 338.35

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Solution

The fourth proportional to 460.43, 691.10 and 338.35 is: 507.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.43 : 691.10 = 338.35 : x
  2. Step 2: Convert to fraction form
    460.43/691.10 = 338.35/x
  3. Step 3: Cross multiply
    460.43x = 691.10 × 338.35
  4. Step 4: Simplify right side
    460.43x = 233,833.69
  5. Step 5: Solve for x
    x = 233,833.69/460.43
  6. Step 6: Final answer
    x = 507.86

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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.