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Finding the Fourth Proportional to 179.30, 268.95 and 51.05

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Solution

The fourth proportional to 179.30, 268.95 and 51.05 is: 76.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.30 : 268.95 = 51.05 : x
  2. Step 2: Convert to fraction form
    179.30/268.95 = 51.05/x
  3. Step 3: Cross multiply
    179.30x = 268.95 × 51.05
  4. Step 4: Simplify right side
    179.30x = 13,728.82
  5. Step 5: Solve for x
    x = 13,728.82/179.30
  6. Step 6: Final answer
    x = 76.57

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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.