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Finding the Fourth Proportional to 382.04, 572.46 and 266.70

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Solution

The fourth proportional to 382.04, 572.46 and 266.70 is: 399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.04 : 572.46 = 266.70 : x
  2. Step 2: Convert to fraction form
    382.04/572.46 = 266.70/x
  3. Step 3: Cross multiply
    382.04x = 572.46 × 266.70
  4. Step 4: Simplify right side
    382.04x = 152,675.08
  5. Step 5: Solve for x
    x = 152,675.08/382.04
  6. Step 6: Final answer
    x = 399.63

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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.