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Finding the Fourth Proportional to 620.94, 935.01 and 448.78

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Solution

The fourth proportional to 620.94, 935.01 and 448.78 is: 675.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.94 : 935.01 = 448.78 : x
  2. Step 2: Convert to fraction form
    620.94/935.01 = 448.78/x
  3. Step 3: Cross multiply
    620.94x = 935.01 × 448.78
  4. Step 4: Simplify right side
    620.94x = 419,613.13
  5. Step 5: Solve for x
    x = 419,613.13/620.94
  6. Step 6: Final answer
    x = 675.77

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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.