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Finding the Fourth Proportional to 152.52, 228.51 and 111.39

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Solution

The fourth proportional to 152.52, 228.51 and 111.39 is: 166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.52 : 228.51 = 111.39 : x
  2. Step 2: Convert to fraction form
    152.52/228.51 = 111.39/x
  3. Step 3: Cross multiply
    152.52x = 228.51 × 111.39
  4. Step 4: Simplify right side
    152.52x = 25,453.73
  5. Step 5: Solve for x
    x = 25,453.73/152.52
  6. Step 6: Final answer
    x = 166.89

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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.