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Finding the Fourth Proportional to 310.41, 462.98 and 279.42

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Solution

The fourth proportional to 310.41, 462.98 and 279.42 is: 416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.41 : 462.98 = 279.42 : x
  2. Step 2: Convert to fraction form
    310.41/462.98 = 279.42/x
  3. Step 3: Cross multiply
    310.41x = 462.98 × 279.42
  4. Step 4: Simplify right side
    310.41x = 129,364.47
  5. Step 5: Solve for x
    x = 129,364.47/310.41
  6. Step 6: Final answer
    x = 416.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.