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Finding the Fourth Proportional to 1,180.62, 1,770.84 and 358.90

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Solution

The fourth proportional to 1,180.62, 1,770.84 and 358.90 is: 538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.62 : 1,770.84 = 358.90 : x
  2. Step 2: Convert to fraction form
    1,180.62/1,770.84 = 358.90/x
  3. Step 3: Cross multiply
    1,180.62x = 1,770.84 × 358.90
  4. Step 4: Simplify right side
    1,180.62x = 635,550.05
  5. Step 5: Solve for x
    x = 635,550.05/1,180.62
  6. Step 6: Final answer
    x = 538.32

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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.