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Finding the Fourth Proportional to 625.32, 936.72 and 299.72

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Solution

The fourth proportional to 625.32, 936.72 and 299.72 is: 448.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.32 : 936.72 = 299.72 : x
  2. Step 2: Convert to fraction form
    625.32/936.72 = 299.72/x
  3. Step 3: Cross multiply
    625.32x = 936.72 × 299.72
  4. Step 4: Simplify right side
    625.32x = 280,753.72
  5. Step 5: Solve for x
    x = 280,753.72/625.32
  6. Step 6: Final answer
    x = 448.98

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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.