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Finding the Fourth Proportional to 86.52, 119.26 and 63.16

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Solution

The fourth proportional to 86.52, 119.26 and 63.16 is: 87.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    86.52 : 119.26 = 63.16 : x
  2. Step 2: Convert to fraction form
    86.52/119.26 = 63.16/x
  3. Step 3: Cross multiply
    86.52x = 119.26 × 63.16
  4. Step 4: Simplify right side
    86.52x = 7,532.46
  5. Step 5: Solve for x
    x = 7,532.46/86.52
  6. Step 6: Final answer
    x = 87.06

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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.