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Finding the Fourth Proportional to 672.91, 928.33 and 525.89

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Solution

The fourth proportional to 672.91, 928.33 and 525.89 is: 725.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.91 : 928.33 = 525.89 : x
  2. Step 2: Convert to fraction form
    672.91/928.33 = 525.89/x
  3. Step 3: Cross multiply
    672.91x = 928.33 × 525.89
  4. Step 4: Simplify right side
    672.91x = 488,200.47
  5. Step 5: Solve for x
    x = 488,200.47/672.91
  6. Step 6: Final answer
    x = 725.51

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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.