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Finding the Fourth Proportional to 617.75, 852.51 and 338

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Solution

The fourth proportional to 617.75, 852.51 and 338 is: 466.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.75 : 852.51 = 338 : x
  2. Step 2: Convert to fraction form
    617.75/852.51 = 338/x
  3. Step 3: Cross multiply
    617.75x = 852.51 × 338
  4. Step 4: Simplify right side
    617.75x = 288,148.38
  5. Step 5: Solve for x
    x = 288,148.38/617.75
  6. Step 6: Final answer
    x = 466.45

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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.