Home / 1,270.23-1,905.34-576.43

Finding the Fourth Proportional to 1,270.23, 1,905.34 and 576.43

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Solution

The fourth proportional to 1,270.23, 1,905.34 and 576.43 is: 864.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.23 : 1,905.34 = 576.43 : x
  2. Step 2: Convert to fraction form
    1,270.23/1,905.34 = 576.43/x
  3. Step 3: Cross multiply
    1,270.23x = 1,905.34 × 576.43
  4. Step 4: Simplify right side
    1,270.23x = 1,098,300.73
  5. Step 5: Solve for x
    x = 1,098,300.73/1,270.23
  6. Step 6: Final answer
    x = 864.65

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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.