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Finding the Fourth Proportional to 306.14, 459.14 and 121.05

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Solution

The fourth proportional to 306.14, 459.14 and 121.05 is: 181.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.14 : 459.14 = 121.05 : x
  2. Step 2: Convert to fraction form
    306.14/459.14 = 121.05/x
  3. Step 3: Cross multiply
    306.14x = 459.14 × 121.05
  4. Step 4: Simplify right side
    306.14x = 55,578.29
  5. Step 5: Solve for x
    x = 55,578.29/306.14
  6. Step 6: Final answer
    x = 181.55

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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.