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Finding the Fourth Proportional to 871.22, 1,203.80 and 760.52

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Solution

The fourth proportional to 871.22, 1,203.80 and 760.52 is: 1,050.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    871.22 : 1,203.80 = 760.52 : x
  2. Step 2: Convert to fraction form
    871.22/1,203.80 = 760.52/x
  3. Step 3: Cross multiply
    871.22x = 1,203.80 × 760.52
  4. Step 4: Simplify right side
    871.22x = 915,513.18
  5. Step 5: Solve for x
    x = 915,513.18/871.22
  6. Step 6: Final answer
    x = 1,050.84

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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.