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Finding the Fourth Proportional to 631.24, 871.52 and 407.27

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Solution

The fourth proportional to 631.24, 871.52 and 407.27 is: 562.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.24 : 871.52 = 407.27 : x
  2. Step 2: Convert to fraction form
    631.24/871.52 = 407.27/x
  3. Step 3: Cross multiply
    631.24x = 871.52 × 407.27
  4. Step 4: Simplify right side
    631.24x = 354,944.09
  5. Step 5: Solve for x
    x = 354,944.09/631.24
  6. Step 6: Final answer
    x = 562.30

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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.