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Finding the Fourth Proportional to 152.52, 227.58 and 137.88

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Solution

The fourth proportional to 152.52, 227.58 and 137.88 is: 205.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.52 : 227.58 = 137.88 : x
  2. Step 2: Convert to fraction form
    152.52/227.58 = 137.88/x
  3. Step 3: Cross multiply
    152.52x = 227.58 × 137.88
  4. Step 4: Simplify right side
    152.52x = 31,378.73
  5. Step 5: Solve for x
    x = 31,378.73/152.52
  6. Step 6: Final answer
    x = 205.74

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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.