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Finding the Fourth Proportional to 671.46, 1,010.91 and 525.99

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Solution

The fourth proportional to 671.46, 1,010.91 and 525.99 is: 791.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.46 : 1,010.91 = 525.99 : x
  2. Step 2: Convert to fraction form
    671.46/1,010.91 = 525.99/x
  3. Step 3: Cross multiply
    671.46x = 1,010.91 × 525.99
  4. Step 4: Simplify right side
    671.46x = 531,728.55
  5. Step 5: Solve for x
    x = 531,728.55/671.46
  6. Step 6: Final answer
    x = 791.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.