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Finding the Fourth Proportional to 1,545.77, 2,318.68 and 852.31

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Solution

The fourth proportional to 1,545.77, 2,318.68 and 852.31 is: 1,278.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.77 : 2,318.68 = 852.31 : x
  2. Step 2: Convert to fraction form
    1,545.77/2,318.68 = 852.31/x
  3. Step 3: Cross multiply
    1,545.77x = 2,318.68 × 852.31
  4. Step 4: Simplify right side
    1,545.77x = 1,976,234.15
  5. Step 5: Solve for x
    x = 1,976,234.15/1,545.77
  6. Step 6: Final answer
    x = 1,278.48

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1.5x scale

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.