Home / 1,042.08-1,563.34-425.79

Finding the Fourth Proportional to 1,042.08, 1,563.34 and 425.79

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Solution

The fourth proportional to 1,042.08, 1,563.34 and 425.79 is: 638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,042.08 : 1,563.34 = 425.79 : x
  2. Step 2: Convert to fraction form
    1,042.08/1,563.34 = 425.79/x
  3. Step 3: Cross multiply
    1,042.08x = 1,563.34 × 425.79
  4. Step 4: Simplify right side
    1,042.08x = 665,654.54
  5. Step 5: Solve for x
    x = 665,654.54/1,042.08
  6. Step 6: Final answer
    x = 638.77

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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.