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Finding the Fourth Proportional to 388.46, 536.01 and 233.21

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Solution

The fourth proportional to 388.46, 536.01 and 233.21 is: 321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.46 : 536.01 = 233.21 : x
  2. Step 2: Convert to fraction form
    388.46/536.01 = 233.21/x
  3. Step 3: Cross multiply
    388.46x = 536.01 × 233.21
  4. Step 4: Simplify right side
    388.46x = 125,002.89
  5. Step 5: Solve for x
    x = 125,002.89/388.46
  6. Step 6: Final answer
    x = 321.79

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.