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Finding the Fourth Proportional to 42.19, 63.01 and 35.38

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Solution

The fourth proportional to 42.19, 63.01 and 35.38 is: 52.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42.19 : 63.01 = 35.38 : x
  2. Step 2: Convert to fraction form
    42.19/63.01 = 35.38/x
  3. Step 3: Cross multiply
    42.19x = 63.01 × 35.38
  4. Step 4: Simplify right side
    42.19x = 2,228.80
  5. Step 5: Solve for x
    x = 2,228.80/42.19
  6. Step 6: Final answer
    x = 52.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.