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Finding the Fourth Proportional to 378.04, 567.21 and 204.94

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Solution

The fourth proportional to 378.04, 567.21 and 204.94 is: 307.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    378.04 : 567.21 = 204.94 : x
  2. Step 2: Convert to fraction form
    378.04/567.21 = 204.94/x
  3. Step 3: Cross multiply
    378.04x = 567.21 × 204.94
  4. Step 4: Simplify right side
    378.04x = 116,244.02
  5. Step 5: Solve for x
    x = 116,244.02/378.04
  6. Step 6: Final answer
    x = 307.49

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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.