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Finding the Fourth Proportional to 385.36, 578.14 and 224.17

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Solution

The fourth proportional to 385.36, 578.14 and 224.17 is: 336.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    385.36 : 578.14 = 224.17 : x
  2. Step 2: Convert to fraction form
    385.36/578.14 = 224.17/x
  3. Step 3: Cross multiply
    385.36x = 578.14 × 224.17
  4. Step 4: Simplify right side
    385.36x = 129,599.64
  5. Step 5: Solve for x
    x = 129,599.64/385.36
  6. Step 6: Final answer
    x = 336.31

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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.