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Finding the Fourth Proportional to 401.38, 554.07 and 270.57

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Solution

The fourth proportional to 401.38, 554.07 and 270.57 is: 373.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.38 : 554.07 = 270.57 : x
  2. Step 2: Convert to fraction form
    401.38/554.07 = 270.57/x
  3. Step 3: Cross multiply
    401.38x = 554.07 × 270.57
  4. Step 4: Simplify right side
    401.38x = 149,914.72
  5. Step 5: Solve for x
    x = 149,914.72/401.38
  6. Step 6: Final answer
    x = 373.50

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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.