Home / 1,207.08-1,663.28-927.30

Finding the Fourth Proportional to 1,207.08, 1,663.28 and 927.30

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Solution

The fourth proportional to 1,207.08, 1,663.28 and 927.30 is: 1,277.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.08 : 1,663.28 = 927.30 : x
  2. Step 2: Convert to fraction form
    1,207.08/1,663.28 = 927.30/x
  3. Step 3: Cross multiply
    1,207.08x = 1,663.28 × 927.30
  4. Step 4: Simplify right side
    1,207.08x = 1,542,359.54
  5. Step 5: Solve for x
    x = 1,542,359.54/1,207.08
  6. Step 6: Final answer
    x = 1,277.76

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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.