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Finding the Fourth Proportional to 541.38, 812 and 248.80

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Solution

The fourth proportional to 541.38, 812 and 248.80 is: 373.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.38 : 812 = 248.80 : x
  2. Step 2: Convert to fraction form
    541.38/812 = 248.80/x
  3. Step 3: Cross multiply
    541.38x = 812 × 248.80
  4. Step 4: Simplify right side
    541.38x = 202,025.60
  5. Step 5: Solve for x
    x = 202,025.60/541.38
  6. Step 6: Final answer
    x = 373.17

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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.