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Finding the Fourth Proportional to 662.55, 913.82 and 426.33

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Solution

The fourth proportional to 662.55, 913.82 and 426.33 is: 588.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.55 : 913.82 = 426.33 : x
  2. Step 2: Convert to fraction form
    662.55/913.82 = 426.33/x
  3. Step 3: Cross multiply
    662.55x = 913.82 × 426.33
  4. Step 4: Simplify right side
    662.55x = 389,586.75
  5. Step 5: Solve for x
    x = 389,586.75/662.55
  6. Step 6: Final answer
    x = 588.01

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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.