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Finding the Fourth Proportional to 662.23, 913.53 and 426.12

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Solution

The fourth proportional to 662.23, 913.53 and 426.12 is: 587.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.23 : 913.53 = 426.12 : x
  2. Step 2: Convert to fraction form
    662.23/913.53 = 426.12/x
  3. Step 3: Cross multiply
    662.23x = 913.53 × 426.12
  4. Step 4: Simplify right side
    662.23x = 389,273.40
  5. Step 5: Solve for x
    x = 389,273.40/662.23
  6. Step 6: Final answer
    x = 587.82

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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.