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Finding the Fourth Proportional to 63.07, 87.03 and 35.43

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Solution

The fourth proportional to 63.07, 87.03 and 35.43 is: 48.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.07 : 87.03 = 35.43 : x
  2. Step 2: Convert to fraction form
    63.07/87.03 = 35.43/x
  3. Step 3: Cross multiply
    63.07x = 87.03 × 35.43
  4. Step 4: Simplify right side
    63.07x = 3,083.47
  5. Step 5: Solve for x
    x = 3,083.47/63.07
  6. Step 6: Final answer
    x = 48.89

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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.