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Finding the Fourth Proportional to 435.78, 654.08 and 367.88

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Solution

The fourth proportional to 435.78, 654.08 and 367.88 is: 552.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    435.78 : 654.08 = 367.88 : x
  2. Step 2: Convert to fraction form
    435.78/654.08 = 367.88/x
  3. Step 3: Cross multiply
    435.78x = 654.08 × 367.88
  4. Step 4: Simplify right side
    435.78x = 240,617.84
  5. Step 5: Solve for x
    x = 240,617.84/435.78
  6. Step 6: Final answer
    x = 552.15

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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.