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Finding the Fourth Proportional to 152.38, 209.67 and 147.83

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Solution

The fourth proportional to 152.38, 209.67 and 147.83 is: 203.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.38 : 209.67 = 147.83 : x
  2. Step 2: Convert to fraction form
    152.38/209.67 = 147.83/x
  3. Step 3: Cross multiply
    152.38x = 209.67 × 147.83
  4. Step 4: Simplify right side
    152.38x = 30,995.52
  5. Step 5: Solve for x
    x = 30,995.52/152.38
  6. Step 6: Final answer
    x = 203.41

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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.