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Finding the Fourth Proportional to 302.13, 452.89 and 147.79

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Solution

The fourth proportional to 302.13, 452.89 and 147.79 is: 221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.13 : 452.89 = 147.79 : x
  2. Step 2: Convert to fraction form
    302.13/452.89 = 147.79/x
  3. Step 3: Cross multiply
    302.13x = 452.89 × 147.79
  4. Step 4: Simplify right side
    302.13x = 66,933.36
  5. Step 5: Solve for x
    x = 66,933.36/302.13
  6. Step 6: Final answer
    x = 221.54

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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.