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Finding the Fourth Proportional to 382.65, 570.42 and 376.71

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Solution

The fourth proportional to 382.65, 570.42 and 376.71 is: 561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.65 : 570.42 = 376.71 : x
  2. Step 2: Convert to fraction form
    382.65/570.42 = 376.71/x
  3. Step 3: Cross multiply
    382.65x = 570.42 × 376.71
  4. Step 4: Simplify right side
    382.65x = 214,882.92
  5. Step 5: Solve for x
    x = 214,882.92/382.65
  6. Step 6: Final answer
    x = 561.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.