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Finding the Fourth Proportional to 1,141.14, 1,711.71 and 410.79

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Solution

The fourth proportional to 1,141.14, 1,711.71 and 410.79 is: 616.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.14 : 1,711.71 = 410.79 : x
  2. Step 2: Convert to fraction form
    1,141.14/1,711.71 = 410.79/x
  3. Step 3: Cross multiply
    1,141.14x = 1,711.71 × 410.79
  4. Step 4: Simplify right side
    1,141.14x = 703,153.35
  5. Step 5: Solve for x
    x = 703,153.35/1,141.14
  6. Step 6: Final answer
    x = 616.19

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Double scale
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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.