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Finding the Fourth Proportional to 349.66, 524.49 and 205.30

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Solution

The fourth proportional to 349.66, 524.49 and 205.30 is: 307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.66 : 524.49 = 205.30 : x
  2. Step 2: Convert to fraction form
    349.66/524.49 = 205.30/x
  3. Step 3: Cross multiply
    349.66x = 524.49 × 205.30
  4. Step 4: Simplify right side
    349.66x = 107,677.80
  5. Step 5: Solve for x
    x = 107,677.80/349.66
  6. Step 6: Final answer
    x = 307.95

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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.