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Finding the Fourth Proportional to 366.70, 549.79 and 212.69

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Solution

The fourth proportional to 366.70, 549.79 and 212.69 is: 318.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.70 : 549.79 = 212.69 : x
  2. Step 2: Convert to fraction form
    366.70/549.79 = 212.69/x
  3. Step 3: Cross multiply
    366.70x = 549.79 × 212.69
  4. Step 4: Simplify right side
    366.70x = 116,934.84
  5. Step 5: Solve for x
    x = 116,934.84/366.70
  6. Step 6: Final answer
    x = 318.88

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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.