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Finding the Fourth Proportional to 556.08, 768.11 and 426.68

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Solution

The fourth proportional to 556.08, 768.11 and 426.68 is: 589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.08 : 768.11 = 426.68 : x
  2. Step 2: Convert to fraction form
    556.08/768.11 = 426.68/x
  3. Step 3: Cross multiply
    556.08x = 768.11 × 426.68
  4. Step 4: Simplify right side
    556.08x = 327,737.17
  5. Step 5: Solve for x
    x = 327,737.17/556.08
  6. Step 6: Final answer
    x = 589.37

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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.