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Finding the Fourth Proportional to 617.97, 852.84 and 369.21

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Solution

The fourth proportional to 617.97, 852.84 and 369.21 is: 509.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.97 : 852.84 = 369.21 : x
  2. Step 2: Convert to fraction form
    617.97/852.84 = 369.21/x
  3. Step 3: Cross multiply
    617.97x = 852.84 × 369.21
  4. Step 4: Simplify right side
    617.97x = 314,877.06
  5. Step 5: Solve for x
    x = 314,877.06/617.97
  6. Step 6: Final answer
    x = 509.53

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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.