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Finding the Fourth Proportional to 541.08, 810.69 and 426.26

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Solution

The fourth proportional to 541.08, 810.69 and 426.26 is: 638.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.08 : 810.69 = 426.26 : x
  2. Step 2: Convert to fraction form
    541.08/810.69 = 426.26/x
  3. Step 3: Cross multiply
    541.08x = 810.69 × 426.26
  4. Step 4: Simplify right side
    541.08x = 345,564.72
  5. Step 5: Solve for x
    x = 345,564.72/541.08
  6. Step 6: Final answer
    x = 638.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.