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Finding the Fourth Proportional to 460.50, 635.49 and 285.85

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Solution

The fourth proportional to 460.50, 635.49 and 285.85 is: 394.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.50 : 635.49 = 285.85 : x
  2. Step 2: Convert to fraction form
    460.50/635.49 = 285.85/x
  3. Step 3: Cross multiply
    460.50x = 635.49 × 285.85
  4. Step 4: Simplify right side
    460.50x = 181,654.82
  5. Step 5: Solve for x
    x = 181,654.82/460.50
  6. Step 6: Final answer
    x = 394.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.