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Finding the Fourth Proportional to 541.70, 747.54 and 308.82

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Solution

The fourth proportional to 541.70, 747.54 and 308.82 is: 426.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.70 : 747.54 = 308.82 : x
  2. Step 2: Convert to fraction form
    541.70/747.54 = 308.82/x
  3. Step 3: Cross multiply
    541.70x = 747.54 × 308.82
  4. Step 4: Simplify right side
    541.70x = 230,855.30
  5. Step 5: Solve for x
    x = 230,855.30/541.70
  6. Step 6: Final answer
    x = 426.17

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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.