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Finding the Fourth Proportional to 296.16, 444.21 and 90.71

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Solution

The fourth proportional to 296.16, 444.21 and 90.71 is: 136.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.16 : 444.21 = 90.71 : x
  2. Step 2: Convert to fraction form
    296.16/444.21 = 90.71/x
  3. Step 3: Cross multiply
    296.16x = 444.21 × 90.71
  4. Step 4: Simplify right side
    296.16x = 40,294.29
  5. Step 5: Solve for x
    x = 40,294.29/296.16
  6. Step 6: Final answer
    x = 136.06

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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.