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Finding the Fourth Proportional to 343.44, 474.76 and 294.23

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Solution

The fourth proportional to 343.44, 474.76 and 294.23 is: 406.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.44 : 474.76 = 294.23 : x
  2. Step 2: Convert to fraction form
    343.44/474.76 = 294.23/x
  3. Step 3: Cross multiply
    343.44x = 474.76 × 294.23
  4. Step 4: Simplify right side
    343.44x = 139,690.19
  5. Step 5: Solve for x
    x = 139,690.19/343.44
  6. Step 6: Final answer
    x = 406.74

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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.