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Finding the Fourth Proportional to 631.53, 871.49 and 365.99

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Solution

The fourth proportional to 631.53, 871.49 and 365.99 is: 505.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.53 : 871.49 = 365.99 : x
  2. Step 2: Convert to fraction form
    631.53/871.49 = 365.99/x
  3. Step 3: Cross multiply
    631.53x = 871.49 × 365.99
  4. Step 4: Simplify right side
    631.53x = 318,953.18
  5. Step 5: Solve for x
    x = 318,953.18/631.53
  6. Step 6: Final answer
    x = 505.05

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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.