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Finding the Fourth Proportional to 101.55, 151.71 and 94.80

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Solution

The fourth proportional to 101.55, 151.71 and 94.80 is: 141.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.55 : 151.71 = 94.80 : x
  2. Step 2: Convert to fraction form
    101.55/151.71 = 94.80/x
  3. Step 3: Cross multiply
    101.55x = 151.71 × 94.80
  4. Step 4: Simplify right side
    101.55x = 14,382.11
  5. Step 5: Solve for x
    x = 14,382.11/101.55
  6. Step 6: Final answer
    x = 141.63

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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.