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Finding the Fourth Proportional to 382.09, 570.14 and 358.87

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Solution

The fourth proportional to 382.09, 570.14 and 358.87 is: 535.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.09 : 570.14 = 358.87 : x
  2. Step 2: Convert to fraction form
    382.09/570.14 = 358.87/x
  3. Step 3: Cross multiply
    382.09x = 570.14 × 358.87
  4. Step 4: Simplify right side
    382.09x = 204,606.14
  5. Step 5: Solve for x
    x = 204,606.14/382.09
  6. Step 6: Final answer
    x = 535.49

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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.