Home / 1,347.28-2,020.86-469.98

Finding the Fourth Proportional to 1,347.28, 2,020.86 and 469.98

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Solution

The fourth proportional to 1,347.28, 2,020.86 and 469.98 is: 704.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.28 : 2,020.86 = 469.98 : x
  2. Step 2: Convert to fraction form
    1,347.28/2,020.86 = 469.98/x
  3. Step 3: Cross multiply
    1,347.28x = 2,020.86 × 469.98
  4. Step 4: Simplify right side
    1,347.28x = 949,761.43
  5. Step 5: Solve for x
    x = 949,761.43/1,347.28
  6. Step 6: Final answer
    x = 704.95

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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.