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Finding the Fourth Proportional to 270.11, 402.76 and 265.25

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Solution

The fourth proportional to 270.11, 402.76 and 265.25 is: 395.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.11 : 402.76 = 265.25 : x
  2. Step 2: Convert to fraction form
    270.11/402.76 = 265.25/x
  3. Step 3: Cross multiply
    270.11x = 402.76 × 265.25
  4. Step 4: Simplify right side
    270.11x = 106,830.76
  5. Step 5: Solve for x
    x = 106,830.76/270.11
  6. Step 6: Final answer
    x = 395.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.