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Finding the Fourth Proportional to 265.75, 366.63 and 199.43

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Solution

The fourth proportional to 265.75, 366.63 and 199.43 is: 275.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.75 : 366.63 = 199.43 : x
  2. Step 2: Convert to fraction form
    265.75/366.63 = 199.43/x
  3. Step 3: Cross multiply
    265.75x = 366.63 × 199.43
  4. Step 4: Simplify right side
    265.75x = 73,115.81
  5. Step 5: Solve for x
    x = 73,115.81/265.75
  6. Step 6: Final answer
    x = 275.13

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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.