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Finding the Fourth Proportional to 343.94, 474.44 and 278.33

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Solution

The fourth proportional to 343.94, 474.44 and 278.33 is: 383.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.94 : 474.44 = 278.33 : x
  2. Step 2: Convert to fraction form
    343.94/474.44 = 278.33/x
  3. Step 3: Cross multiply
    343.94x = 474.44 × 278.33
  4. Step 4: Simplify right side
    343.94x = 132,047.12
  5. Step 5: Solve for x
    x = 132,047.12/343.94
  6. Step 6: Final answer
    x = 383.93

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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.