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Finding the Fourth Proportional to 306.07, 459.15 and 161.71

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Solution

The fourth proportional to 306.07, 459.15 and 161.71 is: 242.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.07 : 459.15 = 161.71 : x
  2. Step 2: Convert to fraction form
    306.07/459.15 = 161.71/x
  3. Step 3: Cross multiply
    306.07x = 459.15 × 161.71
  4. Step 4: Simplify right side
    306.07x = 74,249.15
  5. Step 5: Solve for x
    x = 74,249.15/306.07
  6. Step 6: Final answer
    x = 242.59

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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.