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Finding the Fourth Proportional to 1,180.25, 1,770.39 and 410.75

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Solution

The fourth proportional to 1,180.25, 1,770.39 and 410.75 is: 616.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.25 : 1,770.39 = 410.75 : x
  2. Step 2: Convert to fraction form
    1,180.25/1,770.39 = 410.75/x
  3. Step 3: Cross multiply
    1,180.25x = 1,770.39 × 410.75
  4. Step 4: Simplify right side
    1,180.25x = 727,187.69
  5. Step 5: Solve for x
    x = 727,187.69/1,180.25
  6. Step 6: Final answer
    x = 616.13

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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.