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Finding the Fourth Proportional to 460.79, 635.86 and 261.63

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Solution

The fourth proportional to 460.79, 635.86 and 261.63 is: 361.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.79 : 635.86 = 261.63 : x
  2. Step 2: Convert to fraction form
    460.79/635.86 = 261.63/x
  3. Step 3: Cross multiply
    460.79x = 635.86 × 261.63
  4. Step 4: Simplify right side
    460.79x = 166,360.38
  5. Step 5: Solve for x
    x = 166,360.38/460.79
  6. Step 6: Final answer
    x = 361.03

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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.