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Finding the Fourth Proportional to 463.58, 695.17 and 138.87

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Solution

The fourth proportional to 463.58, 695.17 and 138.87 is: 208.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.58 : 695.17 = 138.87 : x
  2. Step 2: Convert to fraction form
    463.58/695.17 = 138.87/x
  3. Step 3: Cross multiply
    463.58x = 695.17 × 138.87
  4. Step 4: Simplify right side
    463.58x = 96,537.91
  5. Step 5: Solve for x
    x = 96,537.91/463.58
  6. Step 6: Final answer
    x = 208.24

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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.