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Finding the Fourth Proportional to 265.20, 366 and 154.72

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Solution

The fourth proportional to 265.20, 366 and 154.72 is: 213.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.20 : 366 = 154.72 : x
  2. Step 2: Convert to fraction form
    265.20/366 = 154.72/x
  3. Step 3: Cross multiply
    265.20x = 366 × 154.72
  4. Step 4: Simplify right side
    265.20x = 56,627.52
  5. Step 5: Solve for x
    x = 56,627.52/265.20
  6. Step 6: Final answer
    x = 213.53

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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.