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Finding the Fourth Proportional to 922.57, 1,273.31 and 568.69

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Solution

The fourth proportional to 922.57, 1,273.31 and 568.69 is: 784.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    922.57 : 1,273.31 = 568.69 : x
  2. Step 2: Convert to fraction form
    922.57/1,273.31 = 568.69/x
  3. Step 3: Cross multiply
    922.57x = 1,273.31 × 568.69
  4. Step 4: Simplify right side
    922.57x = 724,118.66
  5. Step 5: Solve for x
    x = 724,118.66/922.57
  6. Step 6: Final answer
    x = 784.89

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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.