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Finding the Fourth Proportional to 152.28, 227.16 and 149.40

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Solution

The fourth proportional to 152.28, 227.16 and 149.40 is: 222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.28 : 227.16 = 149.40 : x
  2. Step 2: Convert to fraction form
    152.28/227.16 = 149.40/x
  3. Step 3: Cross multiply
    152.28x = 227.16 × 149.40
  4. Step 4: Simplify right side
    152.28x = 33,937.70
  5. Step 5: Solve for x
    x = 33,937.70/152.28
  6. Step 6: Final answer
    x = 222.86

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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.