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Finding the Fourth Proportional to 401.23, 601.26 and 247.15

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Solution

The fourth proportional to 401.23, 601.26 and 247.15 is: 370.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.23 : 601.26 = 247.15 : x
  2. Step 2: Convert to fraction form
    401.23/601.26 = 247.15/x
  3. Step 3: Cross multiply
    401.23x = 601.26 × 247.15
  4. Step 4: Simplify right side
    401.23x = 148,601.41
  5. Step 5: Solve for x
    x = 148,601.41/401.23
  6. Step 6: Final answer
    x = 370.36

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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.