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Finding the Fourth Proportional to 388.94, 537.44 and 284.35

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Solution

The fourth proportional to 388.94, 537.44 and 284.35 is: 392.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.94 : 537.44 = 284.35 : x
  2. Step 2: Convert to fraction form
    388.94/537.44 = 284.35/x
  3. Step 3: Cross multiply
    388.94x = 537.44 × 284.35
  4. Step 4: Simplify right side
    388.94x = 152,819.09
  5. Step 5: Solve for x
    x = 152,819.09/388.94
  6. Step 6: Final answer
    x = 392.91

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Why These Related Problems?

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