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Finding the Fourth Proportional to 1,052.96, 1,578.78 and 532.69

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Solution

The fourth proportional to 1,052.96, 1,578.78 and 532.69 is: 798.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,052.96 : 1,578.78 = 532.69 : x
  2. Step 2: Convert to fraction form
    1,052.96/1,578.78 = 532.69/x
  3. Step 3: Cross multiply
    1,052.96x = 1,578.78 × 532.69
  4. Step 4: Simplify right side
    1,052.96x = 840,996.37
  5. Step 5: Solve for x
    x = 840,996.37/1,052.96
  6. Step 6: Final answer
    x = 798.70

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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.