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Finding the Fourth Proportional to 453.06, 680.20 and 306.38

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Solution

The fourth proportional to 453.06, 680.20 and 306.38 is: 459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.06 : 680.20 = 306.38 : x
  2. Step 2: Convert to fraction form
    453.06/680.20 = 306.38/x
  3. Step 3: Cross multiply
    453.06x = 680.20 × 306.38
  4. Step 4: Simplify right side
    453.06x = 208,400.61
  5. Step 5: Solve for x
    x = 208,400.61/453.06
  6. Step 6: Final answer
    x = 459.98

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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.