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Finding the Fourth Proportional to 373.27, 515.05 and 215.92

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Solution

The fourth proportional to 373.27, 515.05 and 215.92 is: 297.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.27 : 515.05 = 215.92 : x
  2. Step 2: Convert to fraction form
    373.27/515.05 = 215.92/x
  3. Step 3: Cross multiply
    373.27x = 515.05 × 215.92
  4. Step 4: Simplify right side
    373.27x = 111,209.70
  5. Step 5: Solve for x
    x = 111,209.70/373.27
  6. Step 6: Final answer
    x = 297.94

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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.