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Finding the Fourth Proportional to 388.14, 581.43 and 233.98

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Solution

The fourth proportional to 388.14, 581.43 and 233.98 is: 350.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.14 : 581.43 = 233.98 : x
  2. Step 2: Convert to fraction form
    388.14/581.43 = 233.98/x
  3. Step 3: Cross multiply
    388.14x = 581.43 × 233.98
  4. Step 4: Simplify right side
    388.14x = 136,040.08
  5. Step 5: Solve for x
    x = 136,040.08/388.14
  6. Step 6: Final answer
    x = 350.49

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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.