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Finding the Fourth Proportional to 372.92, 514.70 and 215.58

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Solution

The fourth proportional to 372.92, 514.70 and 215.58 is: 297.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.92 : 514.70 = 215.58 : x
  2. Step 2: Convert to fraction form
    372.92/514.70 = 215.58/x
  3. Step 3: Cross multiply
    372.92x = 514.70 × 215.58
  4. Step 4: Simplify right side
    372.92x = 110,959.03
  5. Step 5: Solve for x
    x = 110,959.03/372.92
  6. Step 6: Final answer
    x = 297.54

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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.