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Finding the Fourth Proportional to 302.44, 453.66 and 74.44

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Solution

The fourth proportional to 302.44, 453.66 and 74.44 is: 111.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.44 : 453.66 = 74.44 : x
  2. Step 2: Convert to fraction form
    302.44/453.66 = 74.44/x
  3. Step 3: Cross multiply
    302.44x = 453.66 × 74.44
  4. Step 4: Simplify right side
    302.44x = 33,769.04
  5. Step 5: Solve for x
    x = 33,769.04/302.44
  6. Step 6: Final answer
    x = 111.66

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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.