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Finding the Fourth Proportional to 340.12, 469.26 and 236.68

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Solution

The fourth proportional to 340.12, 469.26 and 236.68 is: 326.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.12 : 469.26 = 236.68 : x
  2. Step 2: Convert to fraction form
    340.12/469.26 = 236.68/x
  3. Step 3: Cross multiply
    340.12x = 469.26 × 236.68
  4. Step 4: Simplify right side
    340.12x = 111,064.46
  5. Step 5: Solve for x
    x = 111,064.46/340.12
  6. Step 6: Final answer
    x = 326.54

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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.