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Finding the Fourth Proportional to 302.73, 454.10 and 129.45

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Solution

The fourth proportional to 302.73, 454.10 and 129.45 is: 194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.73 : 454.10 = 129.45 : x
  2. Step 2: Convert to fraction form
    302.73/454.10 = 129.45/x
  3. Step 3: Cross multiply
    302.73x = 454.10 × 129.45
  4. Step 4: Simplify right side
    302.73x = 58,782.60
  5. Step 5: Solve for x
    x = 58,782.60/302.73
  6. Step 6: Final answer
    x = 194.18

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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.