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Finding the Fourth Proportional to 265.23, 365.66 and 217.79

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Solution

The fourth proportional to 265.23, 365.66 and 217.79 is: 300.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.23 : 365.66 = 217.79 : x
  2. Step 2: Convert to fraction form
    265.23/365.66 = 217.79/x
  3. Step 3: Cross multiply
    265.23x = 365.66 × 217.79
  4. Step 4: Simplify right side
    265.23x = 79,637.09
  5. Step 5: Solve for x
    x = 79,637.09/265.23
  6. Step 6: Final answer
    x = 300.26

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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.