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Finding the Fourth Proportional to 631.52, 871.63 and 366

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Solution

The fourth proportional to 631.52, 871.63 and 366 is: 505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.52 : 871.63 = 366 : x
  2. Step 2: Convert to fraction form
    631.52/871.63 = 366/x
  3. Step 3: Cross multiply
    631.52x = 871.63 × 366
  4. Step 4: Simplify right side
    631.52x = 319,014.75
  5. Step 5: Solve for x
    x = 319,014.75/631.52
  6. Step 6: Final answer
    x = 505.16

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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.