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Finding the Fourth Proportional to 101.45, 152.24 and 53.39

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Solution

The fourth proportional to 101.45, 152.24 and 53.39 is: 80.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.45 : 152.24 = 53.39 : x
  2. Step 2: Convert to fraction form
    101.45/152.24 = 53.39/x
  3. Step 3: Cross multiply
    101.45x = 152.24 × 53.39
  4. Step 4: Simplify right side
    101.45x = 8,128.09
  5. Step 5: Solve for x
    x = 8,128.09/101.45
  6. Step 6: Final answer
    x = 80.12

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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.