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Finding the Fourth Proportional to 265.14, 366.21 and 216.39

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Solution

The fourth proportional to 265.14, 366.21 and 216.39 is: 298.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.14 : 366.21 = 216.39 : x
  2. Step 2: Convert to fraction form
    265.14/366.21 = 216.39/x
  3. Step 3: Cross multiply
    265.14x = 366.21 × 216.39
  4. Step 4: Simplify right side
    265.14x = 79,244.18
  5. Step 5: Solve for x
    x = 79,244.18/265.14
  6. Step 6: Final answer
    x = 298.88

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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.