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Finding the Fourth Proportional to 375.30, 562.03 and 212.67

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Solution

The fourth proportional to 375.30, 562.03 and 212.67 is: 318.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    375.30 : 562.03 = 212.67 : x
  2. Step 2: Convert to fraction form
    375.30/562.03 = 212.67/x
  3. Step 3: Cross multiply
    375.30x = 562.03 × 212.67
  4. Step 4: Simplify right side
    375.30x = 119,526.39
  5. Step 5: Solve for x
    x = 119,526.39/375.30
  6. Step 6: Final answer
    x = 318.48

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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.