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Finding the Fourth Proportional to 416.68, 620.82 and 410.74

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Solution

The fourth proportional to 416.68, 620.82 and 410.74 is: 611.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.68 : 620.82 = 410.74 : x
  2. Step 2: Convert to fraction form
    416.68/620.82 = 410.74/x
  3. Step 3: Cross multiply
    416.68x = 620.82 × 410.74
  4. Step 4: Simplify right side
    416.68x = 254,995.61
  5. Step 5: Solve for x
    x = 254,995.61/416.68
  6. Step 6: Final answer
    x = 611.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.