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Finding the Fourth Proportional to 1,179.98, 1,770.43 and 358.34

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Solution

The fourth proportional to 1,179.98, 1,770.43 and 358.34 is: 537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.98 : 1,770.43 = 358.34 : x
  2. Step 2: Convert to fraction form
    1,179.98/1,770.43 = 358.34/x
  3. Step 3: Cross multiply
    1,179.98x = 1,770.43 × 358.34
  4. Step 4: Simplify right side
    1,179.98x = 634,415.89
  5. Step 5: Solve for x
    x = 634,415.89/1,179.98
  6. Step 6: Final answer
    x = 537.65

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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.