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Finding the Fourth Proportional to 302.46, 453.58 and 211.20

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Solution

The fourth proportional to 302.46, 453.58 and 211.20 is: 316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.46 : 453.58 = 211.20 : x
  2. Step 2: Convert to fraction form
    302.46/453.58 = 211.20/x
  3. Step 3: Cross multiply
    302.46x = 453.58 × 211.20
  4. Step 4: Simplify right side
    302.46x = 95,793.83
  5. Step 5: Solve for x
    x = 95,793.83/302.46
  6. Step 6: Final answer
    x = 316.72

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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.