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Finding the Fourth Proportional to 541.55, 811.62 and 310.57

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Solution

The fourth proportional to 541.55, 811.62 and 310.57 is: 465.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.55 : 811.62 = 310.57 : x
  2. Step 2: Convert to fraction form
    541.55/811.62 = 310.57/x
  3. Step 3: Cross multiply
    541.55x = 811.62 × 310.57
  4. Step 4: Simplify right side
    541.55x = 252,062.79
  5. Step 5: Solve for x
    x = 252,062.79/541.55
  6. Step 6: Final answer
    x = 465.44

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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.