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Finding the Fourth Proportional to 314.37, 471.38 and 108.87

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Solution

The fourth proportional to 314.37, 471.38 and 108.87 is: 163.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.37 : 471.38 = 108.87 : x
  2. Step 2: Convert to fraction form
    314.37/471.38 = 108.87/x
  3. Step 3: Cross multiply
    314.37x = 471.38 × 108.87
  4. Step 4: Simplify right side
    314.37x = 51,319.14
  5. Step 5: Solve for x
    x = 51,319.14/314.37
  6. Step 6: Final answer
    x = 163.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.