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Finding the Fourth Proportional to 174.15, 260.72 and 92.85

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Solution

The fourth proportional to 174.15, 260.72 and 92.85 is: 139.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.15 : 260.72 = 92.85 : x
  2. Step 2: Convert to fraction form
    174.15/260.72 = 92.85/x
  3. Step 3: Cross multiply
    174.15x = 260.72 × 92.85
  4. Step 4: Simplify right side
    174.15x = 24,206.76
  5. Step 5: Solve for x
    x = 24,206.76/174.15
  6. Step 6: Final answer
    x = 139.00

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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.