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Finding the Fourth Proportional to 344.15, 474.44 and 291.48

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Solution

The fourth proportional to 344.15, 474.44 and 291.48 is: 401.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.15 : 474.44 = 291.48 : x
  2. Step 2: Convert to fraction form
    344.15/474.44 = 291.48/x
  3. Step 3: Cross multiply
    344.15x = 474.44 × 291.48
  4. Step 4: Simplify right side
    344.15x = 138,289.77
  5. Step 5: Solve for x
    x = 138,289.77/344.15
  6. Step 6: Final answer
    x = 401.83

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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.