Home / 1,311.18-1,966.82-337.28

Finding the Fourth Proportional to 1,311.18, 1,966.82 and 337.28

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Solution

The fourth proportional to 1,311.18, 1,966.82 and 337.28 is: 505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.18 : 1,966.82 = 337.28 : x
  2. Step 2: Convert to fraction form
    1,311.18/1,966.82 = 337.28/x
  3. Step 3: Cross multiply
    1,311.18x = 1,966.82 × 337.28
  4. Step 4: Simplify right side
    1,311.18x = 663,369.05
  5. Step 5: Solve for x
    x = 663,369.05/1,311.18
  6. Step 6: Final answer
    x = 505.93

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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.