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Finding the Fourth Proportional to 79.13, 119.30 and 63.29

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Solution

The fourth proportional to 79.13, 119.30 and 63.29 is: 95.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79.13 : 119.30 = 63.29 : x
  2. Step 2: Convert to fraction form
    79.13/119.30 = 63.29/x
  3. Step 3: Cross multiply
    79.13x = 119.30 × 63.29
  4. Step 4: Simplify right side
    79.13x = 7,549.82
  5. Step 5: Solve for x
    x = 7,549.82/79.13
  6. Step 6: Final answer
    x = 95.42

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.