Home / 1,044.40-1,566.70-313.90

Finding the Fourth Proportional to 1,044.40, 1,566.70 and 313.90

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Solution

The fourth proportional to 1,044.40, 1,566.70 and 313.90 is: 470.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,044.40 : 1,566.70 = 313.90 : x
  2. Step 2: Convert to fraction form
    1,044.40/1,566.70 = 313.90/x
  3. Step 3: Cross multiply
    1,044.40x = 1,566.70 × 313.90
  4. Step 4: Simplify right side
    1,044.40x = 491,787.13
  5. Step 5: Solve for x
    x = 491,787.13/1,044.40
  6. Step 6: Final answer
    x = 470.88

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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.