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Finding the Fourth Proportional to 322.14, 482.76 and 240.78

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Solution

The fourth proportional to 322.14, 482.76 and 240.78 is: 360.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.14 : 482.76 = 240.78 : x
  2. Step 2: Convert to fraction form
    322.14/482.76 = 240.78/x
  3. Step 3: Cross multiply
    322.14x = 482.76 × 240.78
  4. Step 4: Simplify right side
    322.14x = 116,238.95
  5. Step 5: Solve for x
    x = 116,238.95/322.14
  6. Step 6: Final answer
    x = 360.83

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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.