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Finding the Fourth Proportional to 344.77, 517.65 and 214.38

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Solution

The fourth proportional to 344.77, 517.65 and 214.38 is: 321.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.77 : 517.65 = 214.38 : x
  2. Step 2: Convert to fraction form
    344.77/517.65 = 214.38/x
  3. Step 3: Cross multiply
    344.77x = 517.65 × 214.38
  4. Step 4: Simplify right side
    344.77x = 110,973.81
  5. Step 5: Solve for x
    x = 110,973.81/344.77
  6. Step 6: Final answer
    x = 321.88

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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.