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Finding the Fourth Proportional to 616.97, 851.51 and 368.44

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Solution

The fourth proportional to 616.97, 851.51 and 368.44 is: 508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.97 : 851.51 = 368.44 : x
  2. Step 2: Convert to fraction form
    616.97/851.51 = 368.44/x
  3. Step 3: Cross multiply
    616.97x = 851.51 × 368.44
  4. Step 4: Simplify right side
    616.97x = 313,729.14
  5. Step 5: Solve for x
    x = 313,729.14/616.97
  6. Step 6: Final answer
    x = 508.50

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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.