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Finding the Fourth Proportional to 374.89, 517.25 and 217.47

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Solution

The fourth proportional to 374.89, 517.25 and 217.47 is: 300.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.89 : 517.25 = 217.47 : x
  2. Step 2: Convert to fraction form
    374.89/517.25 = 217.47/x
  3. Step 3: Cross multiply
    374.89x = 517.25 × 217.47
  4. Step 4: Simplify right side
    374.89x = 112,486.90
  5. Step 5: Solve for x
    x = 112,486.90/374.89
  6. Step 6: Final answer
    x = 300.06

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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.