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Finding the Fourth Proportional to 314.22, 471.05 and 159.81

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Solution

The fourth proportional to 314.22, 471.05 and 159.81 is: 239.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.22 : 471.05 = 159.81 : x
  2. Step 2: Convert to fraction form
    314.22/471.05 = 159.81/x
  3. Step 3: Cross multiply
    314.22x = 471.05 × 159.81
  4. Step 4: Simplify right side
    314.22x = 75,277.93
  5. Step 5: Solve for x
    x = 75,277.93/314.22
  6. Step 6: Final answer
    x = 239.57

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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.