Home / 1,180.20-1,770.56-400.17

Finding the Fourth Proportional to 1,180.20, 1,770.56 and 400.17

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Solution

The fourth proportional to 1,180.20, 1,770.56 and 400.17 is: 600.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.20 : 1,770.56 = 400.17 : x
  2. Step 2: Convert to fraction form
    1,180.20/1,770.56 = 400.17/x
  3. Step 3: Cross multiply
    1,180.20x = 1,770.56 × 400.17
  4. Step 4: Simplify right side
    1,180.20x = 708,522.99
  5. Step 5: Solve for x
    x = 708,522.99/1,180.20
  6. Step 6: Final answer
    x = 600.34

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Double scale
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1.5x scale

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.