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Finding the Fourth Proportional to 438, 604.40 and 241.47

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Solution

The fourth proportional to 438, 604.40 and 241.47 is: 333.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438 : 604.40 = 241.47 : x
  2. Step 2: Convert to fraction form
    438/604.40 = 241.47/x
  3. Step 3: Cross multiply
    438x = 604.40 × 241.47
  4. Step 4: Simplify right side
    438x = 145,943.26
  5. Step 5: Solve for x
    x = 145,943.26/438
  6. Step 6: Final answer
    x = 333.20

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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.