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Finding the Fourth Proportional to 452.70, 624.79 and 328.92

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Solution

The fourth proportional to 452.70, 624.79 and 328.92 is: 453.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.70 : 624.79 = 328.92 : x
  2. Step 2: Convert to fraction form
    452.70/624.79 = 328.92/x
  3. Step 3: Cross multiply
    452.70x = 624.79 × 328.92
  4. Step 4: Simplify right side
    452.70x = 205,505.93
  5. Step 5: Solve for x
    x = 205,505.93/452.70
  6. Step 6: Final answer
    x = 453.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.