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Finding the Fourth Proportional to 447.93, 618.18 and 248.77

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Solution

The fourth proportional to 447.93, 618.18 and 248.77 is: 343.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.93 : 618.18 = 248.77 : x
  2. Step 2: Convert to fraction form
    447.93/618.18 = 248.77/x
  3. Step 3: Cross multiply
    447.93x = 618.18 × 248.77
  4. Step 4: Simplify right side
    447.93x = 153,784.64
  5. Step 5: Solve for x
    x = 153,784.64/447.93
  6. Step 6: Final answer
    x = 343.32

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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.