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Finding the Fourth Proportional to 551.26, 761.03 and 426.64

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Solution

The fourth proportional to 551.26, 761.03 and 426.64 is: 588.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.26 : 761.03 = 426.64 : x
  2. Step 2: Convert to fraction form
    551.26/761.03 = 426.64/x
  3. Step 3: Cross multiply
    551.26x = 761.03 × 426.64
  4. Step 4: Simplify right side
    551.26x = 324,685.84
  5. Step 5: Solve for x
    x = 324,685.84/551.26
  6. Step 6: Final answer
    x = 588.99

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