Home / 1,541.31-2,311.76-445.79

Finding the Fourth Proportional to 1,541.31, 2,311.76 and 445.79

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Solution

The fourth proportional to 1,541.31, 2,311.76 and 445.79 is: 668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.31 : 2,311.76 = 445.79 : x
  2. Step 2: Convert to fraction form
    1,541.31/2,311.76 = 445.79/x
  3. Step 3: Cross multiply
    1,541.31x = 2,311.76 × 445.79
  4. Step 4: Simplify right side
    1,541.31x = 1,030,545.70
  5. Step 5: Solve for x
    x = 1,030,545.70/1,541.31
  6. Step 6: Final answer
    x = 668.62

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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.