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Finding the Fourth Proportional to 301.17, 451.45 and 118.42

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Solution

The fourth proportional to 301.17, 451.45 and 118.42 is: 177.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.17 : 451.45 = 118.42 : x
  2. Step 2: Convert to fraction form
    301.17/451.45 = 118.42/x
  3. Step 3: Cross multiply
    301.17x = 451.45 × 118.42
  4. Step 4: Simplify right side
    301.17x = 53,462.57
  5. Step 5: Solve for x
    x = 53,462.57/301.17
  6. Step 6: Final answer
    x = 177.52

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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.