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Finding the Fourth Proportional to 302.54, 452.79 and 218.80

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Solution

The fourth proportional to 302.54, 452.79 and 218.80 is: 327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.54 : 452.79 = 218.80 : x
  2. Step 2: Convert to fraction form
    302.54/452.79 = 218.80/x
  3. Step 3: Cross multiply
    302.54x = 452.79 × 218.80
  4. Step 4: Simplify right side
    302.54x = 99,071.02
  5. Step 5: Solve for x
    x = 99,071.02/302.54
  6. Step 6: Final answer
    x = 327.47

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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.