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Finding the Fourth Proportional to 304.55, 456.92 and 142.14

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Solution

The fourth proportional to 304.55, 456.92 and 142.14 is: 213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.55 : 456.92 = 142.14 : x
  2. Step 2: Convert to fraction form
    304.55/456.92 = 142.14/x
  3. Step 3: Cross multiply
    304.55x = 456.92 × 142.14
  4. Step 4: Simplify right side
    304.55x = 64,946.61
  5. Step 5: Solve for x
    x = 64,946.61/304.55
  6. Step 6: Final answer
    x = 213.25

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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.