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Finding the Fourth Proportional to 306.08, 455.72 and 301.76

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Solution

The fourth proportional to 306.08, 455.72 and 301.76 is: 449.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.08 : 455.72 = 301.76 : x
  2. Step 2: Convert to fraction form
    306.08/455.72 = 301.76/x
  3. Step 3: Cross multiply
    306.08x = 455.72 × 301.76
  4. Step 4: Simplify right side
    306.08x = 137,514.28
  5. Step 5: Solve for x
    x = 137,514.28/306.08
  6. Step 6: Final answer
    x = 449.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.