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Finding the Fourth Proportional to 541.67, 812.51 and 171.48

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Solution

The fourth proportional to 541.67, 812.51 and 171.48 is: 257.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.67 : 812.51 = 171.48 : x
  2. Step 2: Convert to fraction form
    541.67/812.51 = 171.48/x
  3. Step 3: Cross multiply
    541.67x = 812.51 × 171.48
  4. Step 4: Simplify right side
    541.67x = 139,324.71
  5. Step 5: Solve for x
    x = 139,324.71/541.67
  6. Step 6: Final answer
    x = 257.21

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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.