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Finding the Fourth Proportional to 96.84, 145.27 and 58.31

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Solution

The fourth proportional to 96.84, 145.27 and 58.31 is: 87.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    96.84 : 145.27 = 58.31 : x
  2. Step 2: Convert to fraction form
    96.84/145.27 = 58.31/x
  3. Step 3: Cross multiply
    96.84x = 145.27 × 58.31
  4. Step 4: Simplify right side
    96.84x = 8,470.69
  5. Step 5: Solve for x
    x = 8,470.69/96.84
  6. Step 6: Final answer
    x = 87.47

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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.