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Finding the Fourth Proportional to 460.79, 690.96 and 186.73

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Solution

The fourth proportional to 460.79, 690.96 and 186.73 is: 280.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.79 : 690.96 = 186.73 : x
  2. Step 2: Convert to fraction form
    460.79/690.96 = 186.73/x
  3. Step 3: Cross multiply
    460.79x = 690.96 × 186.73
  4. Step 4: Simplify right side
    460.79x = 129,022.30
  5. Step 5: Solve for x
    x = 129,022.30/460.79
  6. Step 6: Final answer
    x = 280.00

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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.