Home / 1,042.94-1,439.45-669.86

Finding the Fourth Proportional to 1,042.94, 1,439.45 and 669.86

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Solution

The fourth proportional to 1,042.94, 1,439.45 and 669.86 is: 924.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.94 : 1,439.45 = 669.86 : x
  2. Step 2: Convert to fraction form
    1,042.94/1,439.45 = 669.86/x
  3. Step 3: Cross multiply
    1,042.94x = 1,439.45 × 669.86
  4. Step 4: Simplify right side
    1,042.94x = 964,229.98
  5. Step 5: Solve for x
    x = 964,229.98/1,042.94
  6. Step 6: Final answer
    x = 924.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.