Home / 1,180.34-1,770.60-440.15

Finding the Fourth Proportional to 1,180.34, 1,770.60 and 440.15

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Solution

The fourth proportional to 1,180.34, 1,770.60 and 440.15 is: 660.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.34 : 1,770.60 = 440.15 : x
  2. Step 2: Convert to fraction form
    1,180.34/1,770.60 = 440.15/x
  3. Step 3: Cross multiply
    1,180.34x = 1,770.60 × 440.15
  4. Step 4: Simplify right side
    1,180.34x = 779,320.74
  5. Step 5: Solve for x
    x = 779,320.74/1,180.34
  6. Step 6: Final answer
    x = 660.25

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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.