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Finding the Fourth Proportional to 871.54, 1,304.10 and 525.09

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Solution

The fourth proportional to 871.54, 1,304.10 and 525.09 is: 785.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    871.54 : 1,304.10 = 525.09 : x
  2. Step 2: Convert to fraction form
    871.54/1,304.10 = 525.09/x
  3. Step 3: Cross multiply
    871.54x = 1,304.10 × 525.09
  4. Step 4: Simplify right side
    871.54x = 684,763.35
  5. Step 5: Solve for x
    x = 684,763.35/871.54
  6. Step 6: Final answer
    x = 785.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.