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Finding the Fourth Proportional to 96.76, 145.10 and 28.27

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Solution

The fourth proportional to 96.76, 145.10 and 28.27 is: 42.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.76 : 145.10 = 28.27 : x
  2. Step 2: Convert to fraction form
    96.76/145.10 = 28.27/x
  3. Step 3: Cross multiply
    96.76x = 145.10 × 28.27
  4. Step 4: Simplify right side
    96.76x = 4,101.11
  5. Step 5: Solve for x
    x = 4,101.11/96.76
  6. Step 6: Final answer
    x = 42.38

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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.