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Finding the Fourth Proportional to 218.47, 300.14 and 195.46

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Solution

The fourth proportional to 218.47, 300.14 and 195.46 is: 268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.47 : 300.14 = 195.46 : x
  2. Step 2: Convert to fraction form
    218.47/300.14 = 195.46/x
  3. Step 3: Cross multiply
    218.47x = 300.14 × 195.46
  4. Step 4: Simplify right side
    218.47x = 58,666.88
  5. Step 5: Solve for x
    x = 58,666.88/218.47
  6. Step 6: Final answer
    x = 268.53

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.