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Finding the Fourth Proportional to 218.22, 301.10 and 124.98

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Solution

The fourth proportional to 218.22, 301.10 and 124.98 is: 172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.22 : 301.10 = 124.98 : x
  2. Step 2: Convert to fraction form
    218.22/301.10 = 124.98/x
  3. Step 3: Cross multiply
    218.22x = 301.10 × 124.98
  4. Step 4: Simplify right side
    218.22x = 37,631.48
  5. Step 5: Solve for x
    x = 37,631.48/218.22
  6. Step 6: Final answer
    x = 172.45

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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.