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Finding the Fourth Proportional to 1,179.80, 1,770.08 and 358.10

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Solution

The fourth proportional to 1,179.80, 1,770.08 and 358.10 is: 537.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.80 : 1,770.08 = 358.10 : x
  2. Step 2: Convert to fraction form
    1,179.80/1,770.08 = 358.10/x
  3. Step 3: Cross multiply
    1,179.80x = 1,770.08 × 358.10
  4. Step 4: Simplify right side
    1,179.80x = 633,865.65
  5. Step 5: Solve for x
    x = 633,865.65/1,179.80
  6. Step 6: Final answer
    x = 537.27

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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.