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Finding the Fourth Proportional to 401.64, 601.84 and 298.44

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Solution

The fourth proportional to 401.64, 601.84 and 298.44 is: 447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.64 : 601.84 = 298.44 : x
  2. Step 2: Convert to fraction form
    401.64/601.84 = 298.44/x
  3. Step 3: Cross multiply
    401.64x = 601.84 × 298.44
  4. Step 4: Simplify right side
    401.64x = 179,613.13
  5. Step 5: Solve for x
    x = 179,613.13/401.64
  6. Step 6: Final answer
    x = 447.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.