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Finding the Fourth Proportional to 261.12, 358.35 and 236.52

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Solution

The fourth proportional to 261.12, 358.35 and 236.52 is: 324.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.12 : 358.35 = 236.52 : x
  2. Step 2: Convert to fraction form
    261.12/358.35 = 236.52/x
  3. Step 3: Cross multiply
    261.12x = 358.35 × 236.52
  4. Step 4: Simplify right side
    261.12x = 84,755.15
  5. Step 5: Solve for x
    x = 84,755.15/261.12
  6. Step 6: Final answer
    x = 324.58

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.