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Finding the Fourth Proportional to 375.43, 562.76 and 212.77

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Solution

The fourth proportional to 375.43, 562.76 and 212.77 is: 318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.43 : 562.76 = 212.77 : x
  2. Step 2: Convert to fraction form
    375.43/562.76 = 212.77/x
  3. Step 3: Cross multiply
    375.43x = 562.76 × 212.77
  4. Step 4: Simplify right side
    375.43x = 119,735.97
  5. Step 5: Solve for x
    x = 119,735.97/375.43
  6. Step 6: Final answer
    x = 318.93

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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.