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Finding the Fourth Proportional to 673.28, 927.86 and 525.66

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Solution

The fourth proportional to 673.28, 927.86 and 525.66 is: 724.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.28 : 927.86 = 525.66 : x
  2. Step 2: Convert to fraction form
    673.28/927.86 = 525.66/x
  3. Step 3: Cross multiply
    673.28x = 927.86 × 525.66
  4. Step 4: Simplify right side
    673.28x = 487,732.78
  5. Step 5: Solve for x
    x = 487,732.78/673.28
  6. Step 6: Final answer
    x = 724.41

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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.