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Finding the Fourth Proportional to 540.63, 811.06 and 155.85

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Solution

The fourth proportional to 540.63, 811.06 and 155.85 is: 233.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.63 : 811.06 = 155.85 : x
  2. Step 2: Convert to fraction form
    540.63/811.06 = 155.85/x
  3. Step 3: Cross multiply
    540.63x = 811.06 × 155.85
  4. Step 4: Simplify right side
    540.63x = 126,399.26
  5. Step 5: Solve for x
    x = 126,399.26/540.63
  6. Step 6: Final answer
    x = 233.80

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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.