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Finding the Fourth Proportional to 63.35, 87.40 and 41.53

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Solution

The fourth proportional to 63.35, 87.40 and 41.53 is: 57.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.35 : 87.40 = 41.53 : x
  2. Step 2: Convert to fraction form
    63.35/87.40 = 41.53/x
  3. Step 3: Cross multiply
    63.35x = 87.40 × 41.53
  4. Step 4: Simplify right side
    63.35x = 3,629.49
  5. Step 5: Solve for x
    x = 3,629.49/63.35
  6. Step 6: Final answer
    x = 57.29

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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.