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Finding the Fourth Proportional to 460.64, 635.42 and 355.56

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Solution

The fourth proportional to 460.64, 635.42 and 355.56 is: 490.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.64 : 635.42 = 355.56 : x
  2. Step 2: Convert to fraction form
    460.64/635.42 = 355.56/x
  3. Step 3: Cross multiply
    460.64x = 635.42 × 355.56
  4. Step 4: Simplify right side
    460.64x = 225,929.94
  5. Step 5: Solve for x
    x = 225,929.94/460.64
  6. Step 6: Final answer
    x = 490.47

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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.