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Finding the Fourth Proportional to 279.60, 384.91 and 237.39

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Solution

The fourth proportional to 279.60, 384.91 and 237.39 is: 326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279.60 : 384.91 = 237.39 : x
  2. Step 2: Convert to fraction form
    279.60/384.91 = 237.39/x
  3. Step 3: Cross multiply
    279.60x = 384.91 × 237.39
  4. Step 4: Simplify right side
    279.60x = 91,373.78
  5. Step 5: Solve for x
    x = 91,373.78/279.60
  6. Step 6: Final answer
    x = 326.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.