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Finding the Fourth Proportional to 296.31, 444.43 and 79.91

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Solution

The fourth proportional to 296.31, 444.43 and 79.91 is: 119.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.31 : 444.43 = 79.91 : x
  2. Step 2: Convert to fraction form
    296.31/444.43 = 79.91/x
  3. Step 3: Cross multiply
    296.31x = 444.43 × 79.91
  4. Step 4: Simplify right side
    296.31x = 35,513.95
  5. Step 5: Solve for x
    x = 35,513.95/296.31
  6. Step 6: Final answer
    x = 119.85

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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.