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Finding the Fourth Proportional to 460.83, 689.59 and 338.79

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Solution

The fourth proportional to 460.83, 689.59 and 338.79 is: 506.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.83 : 689.59 = 338.79 : x
  2. Step 2: Convert to fraction form
    460.83/689.59 = 338.79/x
  3. Step 3: Cross multiply
    460.83x = 689.59 × 338.79
  4. Step 4: Simplify right side
    460.83x = 233,626.20
  5. Step 5: Solve for x
    x = 233,626.20/460.83
  6. Step 6: Final answer
    x = 506.97

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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.