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Finding the Fourth Proportional to 372.92, 514.22 and 317.58

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Solution

The fourth proportional to 372.92, 514.22 and 317.58 is: 437.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.92 : 514.22 = 317.58 : x
  2. Step 2: Convert to fraction form
    372.92/514.22 = 317.58/x
  3. Step 3: Cross multiply
    372.92x = 514.22 × 317.58
  4. Step 4: Simplify right side
    372.92x = 163,305.99
  5. Step 5: Solve for x
    x = 163,305.99/372.92
  6. Step 6: Final answer
    x = 437.91

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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.