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Finding the Fourth Proportional to 301.98, 416.66 and 219.28

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Solution

The fourth proportional to 301.98, 416.66 and 219.28 is: 302.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.98 : 416.66 = 219.28 : x
  2. Step 2: Convert to fraction form
    301.98/416.66 = 219.28/x
  3. Step 3: Cross multiply
    301.98x = 416.66 × 219.28
  4. Step 4: Simplify right side
    301.98x = 91,365.20
  5. Step 5: Solve for x
    x = 91,365.20/301.98
  6. Step 6: Final answer
    x = 302.55

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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.