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Finding the Fourth Proportional to 344.12, 515.57 and 236.39

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Solution

The fourth proportional to 344.12, 515.57 and 236.39 is: 354.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.12 : 515.57 = 236.39 : x
  2. Step 2: Convert to fraction form
    344.12/515.57 = 236.39/x
  3. Step 3: Cross multiply
    344.12x = 515.57 × 236.39
  4. Step 4: Simplify right side
    344.12x = 121,871.83
  5. Step 5: Solve for x
    x = 121,871.83/344.12
  6. Step 6: Final answer
    x = 354.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.