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Finding the Fourth Proportional to 868.77, 1,303.38 and 252.52

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Solution

The fourth proportional to 868.77, 1,303.38 and 252.52 is: 378.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.77 : 1,303.38 = 252.52 : x
  2. Step 2: Convert to fraction form
    868.77/1,303.38 = 252.52/x
  3. Step 3: Cross multiply
    868.77x = 1,303.38 × 252.52
  4. Step 4: Simplify right side
    868.77x = 329,126.26
  5. Step 5: Solve for x
    x = 329,126.26/868.77
  6. Step 6: Final answer
    x = 378.84

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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.