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Finding the Fourth Proportional to 427.04, 640.13 and 244.05

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Solution

The fourth proportional to 427.04, 640.13 and 244.05 is: 365.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    427.04 : 640.13 = 244.05 : x
  2. Step 2: Convert to fraction form
    427.04/640.13 = 244.05/x
  3. Step 3: Cross multiply
    427.04x = 640.13 × 244.05
  4. Step 4: Simplify right side
    427.04x = 156,222.51
  5. Step 5: Solve for x
    x = 156,222.51/427.04
  6. Step 6: Final answer
    x = 365.83

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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.