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Finding the Fourth Proportional to 302.14, 452.90 and 119.28

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Solution

The fourth proportional to 302.14, 452.90 and 119.28 is: 178.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.14 : 452.90 = 119.28 : x
  2. Step 2: Convert to fraction form
    302.14/452.90 = 119.28/x
  3. Step 3: Cross multiply
    302.14x = 452.90 × 119.28
  4. Step 4: Simplify right side
    302.14x = 54,023.91
  5. Step 5: Solve for x
    x = 54,023.91/302.14
  6. Step 6: Final answer
    x = 178.80

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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.