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Finding the Fourth Proportional to 249.28, 373.28 and 210.66

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Solution

The fourth proportional to 249.28, 373.28 and 210.66 is: 315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.28 : 373.28 = 210.66 : x
  2. Step 2: Convert to fraction form
    249.28/373.28 = 210.66/x
  3. Step 3: Cross multiply
    249.28x = 373.28 × 210.66
  4. Step 4: Simplify right side
    249.28x = 78,635.16
  5. Step 5: Solve for x
    x = 78,635.16/249.28
  6. Step 6: Final answer
    x = 315.45

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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.