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Finding the Fourth Proportional to 616.89, 851.13 and 368.22

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Solution

The fourth proportional to 616.89, 851.13 and 368.22 is: 508.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.89 : 851.13 = 368.22 : x
  2. Step 2: Convert to fraction form
    616.89/851.13 = 368.22/x
  3. Step 3: Cross multiply
    616.89x = 851.13 × 368.22
  4. Step 4: Simplify right side
    616.89x = 313,403.09
  5. Step 5: Solve for x
    x = 313,403.09/616.89
  6. Step 6: Final answer
    x = 508.04

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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.