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Finding the Fourth Proportional to 304.30, 456.24 and 141.76

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Solution

The fourth proportional to 304.30, 456.24 and 141.76 is: 212.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.30 : 456.24 = 141.76 : x
  2. Step 2: Convert to fraction form
    304.30/456.24 = 141.76/x
  3. Step 3: Cross multiply
    304.30x = 456.24 × 141.76
  4. Step 4: Simplify right side
    304.30x = 64,676.58
  5. Step 5: Solve for x
    x = 64,676.58/304.30
  6. Step 6: Final answer
    x = 212.54

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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.