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Finding the Fourth Proportional to 302.28, 453.22 and 148.08

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Solution

The fourth proportional to 302.28, 453.22 and 148.08 is: 222.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.28 : 453.22 = 148.08 : x
  2. Step 2: Convert to fraction form
    302.28/453.22 = 148.08/x
  3. Step 3: Cross multiply
    302.28x = 453.22 × 148.08
  4. Step 4: Simplify right side
    302.28x = 67,112.82
  5. Step 5: Solve for x
    x = 67,112.82/302.28
  6. Step 6: Final answer
    x = 222.02

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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.