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Finding the Fourth Proportional to 541.50, 811.28 and 228.45

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Solution

The fourth proportional to 541.50, 811.28 and 228.45 is: 342.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.50 : 811.28 = 228.45 : x
  2. Step 2: Convert to fraction form
    541.50/811.28 = 228.45/x
  3. Step 3: Cross multiply
    541.50x = 811.28 × 228.45
  4. Step 4: Simplify right side
    541.50x = 185,335.77
  5. Step 5: Solve for x
    x = 185,335.77/541.50
  6. Step 6: Final answer
    x = 342.26

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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.