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Finding the Fourth Proportional to 438.07, 604.46 and 251.54

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Solution

The fourth proportional to 438.07, 604.46 and 251.54 is: 347.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.07 : 604.46 = 251.54 : x
  2. Step 2: Convert to fraction form
    438.07/604.46 = 251.54/x
  3. Step 3: Cross multiply
    438.07x = 604.46 × 251.54
  4. Step 4: Simplify right side
    438.07x = 152,044.61
  5. Step 5: Solve for x
    x = 152,044.61/438.07
  6. Step 6: Final answer
    x = 347.08

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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.