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Finding the Fourth Proportional to 301.33, 452.15 and 118.72

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Solution

The fourth proportional to 301.33, 452.15 and 118.72 is: 178.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.33 : 452.15 = 118.72 : x
  2. Step 2: Convert to fraction form
    301.33/452.15 = 118.72/x
  3. Step 3: Cross multiply
    301.33x = 452.15 × 118.72
  4. Step 4: Simplify right side
    301.33x = 53,679.25
  5. Step 5: Solve for x
    x = 53,679.25/301.33
  6. Step 6: Final answer
    x = 178.14

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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.