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Finding the Fourth Proportional to 541.21, 811.80 and 175.90

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Solution

The fourth proportional to 541.21, 811.80 and 175.90 is: 263.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    541.21 : 811.80 = 175.90 : x
  2. Step 2: Convert to fraction form
    541.21/811.80 = 175.90/x
  3. Step 3: Cross multiply
    541.21x = 811.80 × 175.90
  4. Step 4: Simplify right side
    541.21x = 142,795.62
  5. Step 5: Solve for x
    x = 142,795.62/541.21
  6. Step 6: Final answer
    x = 263.85

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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.