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Finding the Fourth Proportional to 388.46, 531.99 and 383.33

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Solution

The fourth proportional to 388.46, 531.99 and 383.33 is: 524.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.46 : 531.99 = 383.33 : x
  2. Step 2: Convert to fraction form
    388.46/531.99 = 383.33/x
  3. Step 3: Cross multiply
    388.46x = 531.99 × 383.33
  4. Step 4: Simplify right side
    388.46x = 203,928.92
  5. Step 5: Solve for x
    x = 203,928.92/388.46
  6. Step 6: Final answer
    x = 524.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.