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Finding the Fourth Proportional to 152.87, 229.34 and 66.16

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Solution

The fourth proportional to 152.87, 229.34 and 66.16 is: 99.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.87 : 229.34 = 66.16 : x
  2. Step 2: Convert to fraction form
    152.87/229.34 = 66.16/x
  3. Step 3: Cross multiply
    152.87x = 229.34 × 66.16
  4. Step 4: Simplify right side
    152.87x = 15,174.16
  5. Step 5: Solve for x
    x = 15,174.16/152.87
  6. Step 6: Final answer
    x = 99.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.