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Finding the Fourth Proportional to 620.82, 927.78 and 498.51

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Solution

The fourth proportional to 620.82, 927.78 and 498.51 is: 744.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.82 : 927.78 = 498.51 : x
  2. Step 2: Convert to fraction form
    620.82/927.78 = 498.51/x
  3. Step 3: Cross multiply
    620.82x = 927.78 × 498.51
  4. Step 4: Simplify right side
    620.82x = 462,507.61
  5. Step 5: Solve for x
    x = 462,507.61/620.82
  6. Step 6: Final answer
    x = 744.99

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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.