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Finding the Fourth Proportional to 541.89, 813.51 and 451.71

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Solution

The fourth proportional to 541.89, 813.51 and 451.71 is: 678.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.89 : 813.51 = 451.71 : x
  2. Step 2: Convert to fraction form
    541.89/813.51 = 451.71/x
  3. Step 3: Cross multiply
    541.89x = 813.51 × 451.71
  4. Step 4: Simplify right side
    541.89x = 367,470.60
  5. Step 5: Solve for x
    x = 367,470.60/541.89
  6. Step 6: Final answer
    x = 678.13

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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.