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Finding the Fourth Proportional to 438.00, 604.33 and 251.51

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Solution

The fourth proportional to 438.00, 604.33 and 251.51 is: 347.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.00 : 604.33 = 251.51 : x
  2. Step 2: Convert to fraction form
    438.00/604.33 = 251.51/x
  3. Step 3: Cross multiply
    438.00x = 604.33 × 251.51
  4. Step 4: Simplify right side
    438.00x = 151,991.92
  5. Step 5: Solve for x
    x = 151,991.92/438.00
  6. Step 6: Final answer
    x = 347.02

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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.