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Finding the Fourth Proportional to 654.45, 902.81 and 607.55

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Solution

The fourth proportional to 654.45, 902.81 and 607.55 is: 838.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.45 : 902.81 = 607.55 : x
  2. Step 2: Convert to fraction form
    654.45/902.81 = 607.55/x
  3. Step 3: Cross multiply
    654.45x = 902.81 × 607.55
  4. Step 4: Simplify right side
    654.45x = 548,504.30
  5. Step 5: Solve for x
    x = 548,504.30/654.45
  6. Step 6: Final answer
    x = 838.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.