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Finding the Fourth Proportional to 388.06, 581.70 and 233.80

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Solution

The fourth proportional to 388.06, 581.70 and 233.80 is: 350.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.06 : 581.70 = 233.80 : x
  2. Step 2: Convert to fraction form
    388.06/581.70 = 233.80/x
  3. Step 3: Cross multiply
    388.06x = 581.70 × 233.80
  4. Step 4: Simplify right side
    388.06x = 136,001.46
  5. Step 5: Solve for x
    x = 136,001.46/388.06
  6. Step 6: Final answer
    x = 350.47

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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.