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Finding the Fourth Proportional to 440.67, 608.09 and 251.59

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Solution

The fourth proportional to 440.67, 608.09 and 251.59 is: 347.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.67 : 608.09 = 251.59 : x
  2. Step 2: Convert to fraction form
    440.67/608.09 = 251.59/x
  3. Step 3: Cross multiply
    440.67x = 608.09 × 251.59
  4. Step 4: Simplify right side
    440.67x = 152,989.36
  5. Step 5: Solve for x
    x = 152,989.36/440.67
  6. Step 6: Final answer
    x = 347.17

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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.