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Finding the Fourth Proportional to 103.59, 155.41 and 57.97

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Solution

The fourth proportional to 103.59, 155.41 and 57.97 is: 86.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.59 : 155.41 = 57.97 : x
  2. Step 2: Convert to fraction form
    103.59/155.41 = 57.97/x
  3. Step 3: Cross multiply
    103.59x = 155.41 × 57.97
  4. Step 4: Simplify right side
    103.59x = 9,008.34
  5. Step 5: Solve for x
    x = 9,008.34/103.59
  6. Step 6: Final answer
    x = 86.97

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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.