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Finding the Fourth Proportional to 388.94, 583.26 and 242.48

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Solution

The fourth proportional to 388.94, 583.26 and 242.48 is: 363.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.94 : 583.26 = 242.48 : x
  2. Step 2: Convert to fraction form
    388.94/583.26 = 242.48/x
  3. Step 3: Cross multiply
    388.94x = 583.26 × 242.48
  4. Step 4: Simplify right side
    388.94x = 141,425.97
  5. Step 5: Solve for x
    x = 141,425.97/388.94
  6. Step 6: Final answer
    x = 363.62

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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.