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Finding the Fourth Proportional to 662.80, 998.62 and 610.32

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Solution

The fourth proportional to 662.80, 998.62 and 610.32 is: 919.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.80 : 998.62 = 610.32 : x
  2. Step 2: Convert to fraction form
    662.80/998.62 = 610.32/x
  3. Step 3: Cross multiply
    662.80x = 998.62 × 610.32
  4. Step 4: Simplify right side
    662.80x = 609,477.76
  5. Step 5: Solve for x
    x = 609,477.76/662.80
  6. Step 6: Final answer
    x = 919.55

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.