Home / 1,180.16-1,770.29-358.55

Finding the Fourth Proportional to 1,180.16, 1,770.29 and 358.55

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Solution

The fourth proportional to 1,180.16, 1,770.29 and 358.55 is: 537.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.16 : 1,770.29 = 358.55 : x
  2. Step 2: Convert to fraction form
    1,180.16/1,770.29 = 358.55/x
  3. Step 3: Cross multiply
    1,180.16x = 1,770.29 × 358.55
  4. Step 4: Simplify right side
    1,180.16x = 634,737.48
  5. Step 5: Solve for x
    x = 634,737.48/1,180.16
  6. Step 6: Final answer
    x = 537.84

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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.