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Finding the Fourth Proportional to 631.14, 871.10 and 365.63

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Solution

The fourth proportional to 631.14, 871.10 and 365.63 is: 504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.14 : 871.10 = 365.63 : x
  2. Step 2: Convert to fraction form
    631.14/871.10 = 365.63/x
  3. Step 3: Cross multiply
    631.14x = 871.10 × 365.63
  4. Step 4: Simplify right side
    631.14x = 318,500.29
  5. Step 5: Solve for x
    x = 318,500.29/631.14
  6. Step 6: Final answer
    x = 504.64

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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.