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Finding the Fourth Proportional to 631.44, 871.50 and 369.66

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Solution

The fourth proportional to 631.44, 871.50 and 369.66 is: 510.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.44 : 871.50 = 369.66 : x
  2. Step 2: Convert to fraction form
    631.44/871.50 = 369.66/x
  3. Step 3: Cross multiply
    631.44x = 871.50 × 369.66
  4. Step 4: Simplify right side
    631.44x = 322,158.69
  5. Step 5: Solve for x
    x = 322,158.69/631.44
  6. Step 6: Final answer
    x = 510.20

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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.