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Finding the Fourth Proportional to 306.86, 460.10 and 220.08

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Solution

The fourth proportional to 306.86, 460.10 and 220.08 is: 329.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.86 : 460.10 = 220.08 : x
  2. Step 2: Convert to fraction form
    306.86/460.10 = 220.08/x
  3. Step 3: Cross multiply
    306.86x = 460.10 × 220.08
  4. Step 4: Simplify right side
    306.86x = 101,258.81
  5. Step 5: Solve for x
    x = 101,258.81/306.86
  6. Step 6: Final answer
    x = 329.98

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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.