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Finding the Fourth Proportional to 375.12, 562.68 and 212.94

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Solution

The fourth proportional to 375.12, 562.68 and 212.94 is: 319.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.12 : 562.68 = 212.94 : x
  2. Step 2: Convert to fraction form
    375.12/562.68 = 212.94/x
  3. Step 3: Cross multiply
    375.12x = 562.68 × 212.94
  4. Step 4: Simplify right side
    375.12x = 119,817.08
  5. Step 5: Solve for x
    x = 119,817.08/375.12
  6. Step 6: Final answer
    x = 319.41

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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.