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Finding the Fourth Proportional to 375.17, 559.45 and 349.20

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Solution

The fourth proportional to 375.17, 559.45 and 349.20 is: 520.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.17 : 559.45 = 349.20 : x
  2. Step 2: Convert to fraction form
    375.17/559.45 = 349.20/x
  3. Step 3: Cross multiply
    375.17x = 559.45 × 349.20
  4. Step 4: Simplify right side
    375.17x = 195,359.94
  5. Step 5: Solve for x
    x = 195,359.94/375.17
  6. Step 6: Final answer
    x = 520.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.