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Finding the Fourth Proportional to 878.96, 1,315.39 and 532.08

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Solution

The fourth proportional to 878.96, 1,315.39 and 532.08 is: 796.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    878.96 : 1,315.39 = 532.08 : x
  2. Step 2: Convert to fraction form
    878.96/1,315.39 = 532.08/x
  3. Step 3: Cross multiply
    878.96x = 1,315.39 × 532.08
  4. Step 4: Simplify right side
    878.96x = 699,890.05
  5. Step 5: Solve for x
    x = 699,890.05/878.96
  6. Step 6: Final answer
    x = 796.28

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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.