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Finding the Fourth Proportional to 265.16, 365.79 and 230.15

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Solution

The fourth proportional to 265.16, 365.79 and 230.15 is: 317.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    265.16 : 365.79 = 230.15 : x
  2. Step 2: Convert to fraction form
    265.16/365.79 = 230.15/x
  3. Step 3: Cross multiply
    265.16x = 365.79 × 230.15
  4. Step 4: Simplify right side
    265.16x = 84,185.60
  5. Step 5: Solve for x
    x = 84,185.60/265.16
  6. Step 6: Final answer
    x = 317.49

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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.