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Finding the Fourth Proportional to 1,350.92, 1,864.55 and 853.24

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Solution

The fourth proportional to 1,350.92, 1,864.55 and 853.24 is: 1,177.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.92 : 1,864.55 = 853.24 : x
  2. Step 2: Convert to fraction form
    1,350.92/1,864.55 = 853.24/x
  3. Step 3: Cross multiply
    1,350.92x = 1,864.55 × 853.24
  4. Step 4: Simplify right side
    1,350.92x = 1,590,906.11
  5. Step 5: Solve for x
    x = 1,590,906.11/1,350.92
  6. Step 6: Final answer
    x = 1,177.65

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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.