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Finding the Fourth Proportional to 273.80, 410.86 and 111.50

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Solution

The fourth proportional to 273.80, 410.86 and 111.50 is: 167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.80 : 410.86 = 111.50 : x
  2. Step 2: Convert to fraction form
    273.80/410.86 = 111.50/x
  3. Step 3: Cross multiply
    273.80x = 410.86 × 111.50
  4. Step 4: Simplify right side
    273.80x = 45,810.89
  5. Step 5: Solve for x
    x = 45,810.89/273.80
  6. Step 6: Final answer
    x = 167.32

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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.