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Finding the Fourth Proportional to 525.75, 725.43 and 292.87

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Solution

The fourth proportional to 525.75, 725.43 and 292.87 is: 404.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.75 : 725.43 = 292.87 : x
  2. Step 2: Convert to fraction form
    525.75/725.43 = 292.87/x
  3. Step 3: Cross multiply
    525.75x = 725.43 × 292.87
  4. Step 4: Simplify right side
    525.75x = 212,456.68
  5. Step 5: Solve for x
    x = 212,456.68/525.75
  6. Step 6: Final answer
    x = 404.10

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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.