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Finding the Fourth Proportional to 401.44, 554.28 and 246.40

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Solution

The fourth proportional to 401.44, 554.28 and 246.40 is: 340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.44 : 554.28 = 246.40 : x
  2. Step 2: Convert to fraction form
    401.44/554.28 = 246.40/x
  3. Step 3: Cross multiply
    401.44x = 554.28 × 246.40
  4. Step 4: Simplify right side
    401.44x = 136,574.59
  5. Step 5: Solve for x
    x = 136,574.59/401.44
  6. Step 6: Final answer
    x = 340.21

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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.