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Finding the Fourth Proportional to 1,624.87, 2,436.78 and 528.97

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Solution

The fourth proportional to 1,624.87, 2,436.78 and 528.97 is: 793.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,624.87 : 2,436.78 = 528.97 : x
  2. Step 2: Convert to fraction form
    1,624.87/2,436.78 = 528.97/x
  3. Step 3: Cross multiply
    1,624.87x = 2,436.78 × 528.97
  4. Step 4: Simplify right side
    1,624.87x = 1,288,983.52
  5. Step 5: Solve for x
    x = 1,288,983.52/1,624.87
  6. Step 6: Final answer
    x = 793.28

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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.