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Finding the Fourth Proportional to 372.55, 514.08 and 206.74

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Solution

The fourth proportional to 372.55, 514.08 and 206.74 is: 285.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.55 : 514.08 = 206.74 : x
  2. Step 2: Convert to fraction form
    372.55/514.08 = 206.74/x
  3. Step 3: Cross multiply
    372.55x = 514.08 × 206.74
  4. Step 4: Simplify right side
    372.55x = 106,280.90
  5. Step 5: Solve for x
    x = 106,280.90/372.55
  6. Step 6: Final answer
    x = 285.28

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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.