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Finding the Fourth Proportional to 152.64, 229.86 and 112.34

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Solution

The fourth proportional to 152.64, 229.86 and 112.34 is: 169.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.64 : 229.86 = 112.34 : x
  2. Step 2: Convert to fraction form
    152.64/229.86 = 112.34/x
  3. Step 3: Cross multiply
    152.64x = 229.86 × 112.34
  4. Step 4: Simplify right side
    152.64x = 25,821.91
  5. Step 5: Solve for x
    x = 25,821.91/152.64
  6. Step 6: Final answer
    x = 169.17

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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.