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Finding the Fourth Proportional to 541.15, 811.61 and 248.57

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Solution

The fourth proportional to 541.15, 811.61 and 248.57 is: 372.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.15 : 811.61 = 248.57 : x
  2. Step 2: Convert to fraction form
    541.15/811.61 = 248.57/x
  3. Step 3: Cross multiply
    541.15x = 811.61 × 248.57
  4. Step 4: Simplify right side
    541.15x = 201,741.90
  5. Step 5: Solve for x
    x = 201,741.90/541.15
  6. Step 6: Final answer
    x = 372.80

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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.