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Finding the Fourth Proportional to 351.11, 524.59 and 338.99

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Solution

The fourth proportional to 351.11, 524.59 and 338.99 is: 506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.11 : 524.59 = 338.99 : x
  2. Step 2: Convert to fraction form
    351.11/524.59 = 338.99/x
  3. Step 3: Cross multiply
    351.11x = 524.59 × 338.99
  4. Step 4: Simplify right side
    351.11x = 177,830.76
  5. Step 5: Solve for x
    x = 177,830.76/351.11
  6. Step 6: Final answer
    x = 506.48

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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.