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Finding the Fourth Proportional to 375.46, 562.80 and 253.43

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Solution

The fourth proportional to 375.46, 562.80 and 253.43 is: 379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.46 : 562.80 = 253.43 : x
  2. Step 2: Convert to fraction form
    375.46/562.80 = 253.43/x
  3. Step 3: Cross multiply
    375.46x = 562.80 × 253.43
  4. Step 4: Simplify right side
    375.46x = 142,630.40
  5. Step 5: Solve for x
    x = 142,630.40/375.46
  6. Step 6: Final answer
    x = 379.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.