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Finding the Fourth Proportional to 372.59, 514.24 and 215.20

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Solution

The fourth proportional to 372.59, 514.24 and 215.20 is: 297.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.59 : 514.24 = 215.20 : x
  2. Step 2: Convert to fraction form
    372.59/514.24 = 215.20/x
  3. Step 3: Cross multiply
    372.59x = 514.24 × 215.20
  4. Step 4: Simplify right side
    372.59x = 110,665.76
  5. Step 5: Solve for x
    x = 110,665.76/372.59
  6. Step 6: Final answer
    x = 297.02

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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.