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Finding the Third Proportional to 558.28 and 883.69

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Solution

The third proportional to 558.28 and 883.69 is: 1,398.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.28 : 883.69 = 883.69 : x
  2. Step 2: Convert to fraction form
    558.28/883.69 = 883.69/x
  3. Step 3: Cross multiply
    558.28x = 883.69 × 883.69
  4. Step 4: Simplify right side
    558.28x = 780,903.60
  5. Step 5: Solve for x
    x = 780,903.60/558.28
  6. Step 6: Final answer
    x = 1,398.76

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.