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Finding the Fourth Proportional to 101.68, 152.53 and 47.57

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Solution

The fourth proportional to 101.68, 152.53 and 47.57 is: 71.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.68 : 152.53 = 47.57 : x
  2. Step 2: Convert to fraction form
    101.68/152.53 = 47.57/x
  3. Step 3: Cross multiply
    101.68x = 152.53 × 47.57
  4. Step 4: Simplify right side
    101.68x = 7,254.97
  5. Step 5: Solve for x
    x = 7,254.97/101.68
  6. Step 6: Final answer
    x = 71.35

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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.