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Finding the Fourth Proportional to 537.84, 742.41 and 380.70

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Solution

The fourth proportional to 537.84, 742.41 and 380.70 is: 525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.84 : 742.41 = 380.70 : x
  2. Step 2: Convert to fraction form
    537.84/742.41 = 380.70/x
  3. Step 3: Cross multiply
    537.84x = 742.41 × 380.70
  4. Step 4: Simplify right side
    537.84x = 282,635.49
  5. Step 5: Solve for x
    x = 282,635.49/537.84
  6. Step 6: Final answer
    x = 525.50

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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.