Home / 1,545.25-2,318.68-621.47

Finding the Fourth Proportional to 1,545.25, 2,318.68 and 621.47

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Solution

The fourth proportional to 1,545.25, 2,318.68 and 621.47 is: 932.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.25 : 2,318.68 = 621.47 : x
  2. Step 2: Convert to fraction form
    1,545.25/2,318.68 = 621.47/x
  3. Step 3: Cross multiply
    1,545.25x = 2,318.68 × 621.47
  4. Step 4: Simplify right side
    1,545.25x = 1,440,993.14
  5. Step 5: Solve for x
    x = 1,440,993.14/1,545.25
  6. Step 6: Final answer
    x = 932.53

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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.