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Finding the Fourth Proportional to 616.18, 850.52 and 419.66

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Solution

The fourth proportional to 616.18, 850.52 and 419.66 is: 579.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    616.18 : 850.52 = 419.66 : x
  2. Step 2: Convert to fraction form
    616.18/850.52 = 419.66/x
  3. Step 3: Cross multiply
    616.18x = 850.52 × 419.66
  4. Step 4: Simplify right side
    616.18x = 356,929.22
  5. Step 5: Solve for x
    x = 356,929.22/616.18
  6. Step 6: Final answer
    x = 579.26

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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.