Home / 1,180.27-1,769.70-400.05

Finding the Fourth Proportional to 1,180.27, 1,769.70 and 400.05

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Solution

The fourth proportional to 1,180.27, 1,769.70 and 400.05 is: 599.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.27 : 1,769.70 = 400.05 : x
  2. Step 2: Convert to fraction form
    1,180.27/1,769.70 = 400.05/x
  3. Step 3: Cross multiply
    1,180.27x = 1,769.70 × 400.05
  4. Step 4: Simplify right side
    1,180.27x = 707,969.99
  5. Step 5: Solve for x
    x = 707,969.99/1,180.27
  6. Step 6: Final answer
    x = 599.84

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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.