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Finding the Fourth Proportional to 1,119.92, 1,545.53 and 622.62

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Solution

The fourth proportional to 1,119.92, 1,545.53 and 622.62 is: 859.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.92 : 1,545.53 = 622.62 : x
  2. Step 2: Convert to fraction form
    1,119.92/1,545.53 = 622.62/x
  3. Step 3: Cross multiply
    1,119.92x = 1,545.53 × 622.62
  4. Step 4: Simplify right side
    1,119.92x = 962,270.16
  5. Step 5: Solve for x
    x = 962,270.16/1,119.92
  6. Step 6: Final answer
    x = 859.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.