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Finding the Fourth Proportional to 322.13, 482.51 and 159.47

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Solution

The fourth proportional to 322.13, 482.51 and 159.47 is: 238.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.13 : 482.51 = 159.47 : x
  2. Step 2: Convert to fraction form
    322.13/482.51 = 159.47/x
  3. Step 3: Cross multiply
    322.13x = 482.51 × 159.47
  4. Step 4: Simplify right side
    322.13x = 76,944.77
  5. Step 5: Solve for x
    x = 76,944.77/322.13
  6. Step 6: Final answer
    x = 238.86

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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.