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Finding the Fourth Proportional to 382.45, 572.58 and 266.62

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Solution

The fourth proportional to 382.45, 572.58 and 266.62 is: 399.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.45 : 572.58 = 266.62 : x
  2. Step 2: Convert to fraction form
    382.45/572.58 = 266.62/x
  3. Step 3: Cross multiply
    382.45x = 572.58 × 266.62
  4. Step 4: Simplify right side
    382.45x = 152,661.28
  5. Step 5: Solve for x
    x = 152,661.28/382.45
  6. Step 6: Final answer
    x = 399.17

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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.