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Finding the Fourth Proportional to 541.57, 811.70 and 310.61

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Solution

The fourth proportional to 541.57, 811.70 and 310.61 is: 465.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.57 : 811.70 = 310.61 : x
  2. Step 2: Convert to fraction form
    541.57/811.70 = 310.61/x
  3. Step 3: Cross multiply
    541.57x = 811.70 × 310.61
  4. Step 4: Simplify right side
    541.57x = 252,120.58
  5. Step 5: Solve for x
    x = 252,120.58/541.57
  6. Step 6: Final answer
    x = 465.54

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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.