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Finding the Fourth Proportional to 220, 302.88 and 184.80

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Solution

The fourth proportional to 220, 302.88 and 184.80 is: 254.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220 : 302.88 = 184.80 : x
  2. Step 2: Convert to fraction form
    220/302.88 = 184.80/x
  3. Step 3: Cross multiply
    220x = 302.88 × 184.80
  4. Step 4: Simplify right side
    220x = 55,972.22
  5. Step 5: Solve for x
    x = 55,972.22/220
  6. Step 6: Final answer
    x = 254.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.