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Finding the Fourth Proportional to 541.16, 811.78 and 326.10

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Solution

The fourth proportional to 541.16, 811.78 and 326.10 is: 489.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.16 : 811.78 = 326.10 : x
  2. Step 2: Convert to fraction form
    541.16/811.78 = 326.10/x
  3. Step 3: Cross multiply
    541.16x = 811.78 × 326.10
  4. Step 4: Simplify right side
    541.16x = 264,721.46
  5. Step 5: Solve for x
    x = 264,721.46/541.16
  6. Step 6: Final answer
    x = 489.18

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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.