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Finding the Fourth Proportional to 349.92, 521.82 and 341.64

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Solution

The fourth proportional to 349.92, 521.82 and 341.64 is: 509.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.92 : 521.82 = 341.64 : x
  2. Step 2: Convert to fraction form
    349.92/521.82 = 341.64/x
  3. Step 3: Cross multiply
    349.92x = 521.82 × 341.64
  4. Step 4: Simplify right side
    349.92x = 178,274.58
  5. Step 5: Solve for x
    x = 178,274.58/349.92
  6. Step 6: Final answer
    x = 509.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.