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Finding the Fourth Proportional to 460.64, 635.68 and 253.60

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Solution

The fourth proportional to 460.64, 635.68 and 253.60 is: 349.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.64 : 635.68 = 253.60 : x
  2. Step 2: Convert to fraction form
    460.64/635.68 = 253.60/x
  3. Step 3: Cross multiply
    460.64x = 635.68 × 253.60
  4. Step 4: Simplify right side
    460.64x = 161,208.45
  5. Step 5: Solve for x
    x = 161,208.45/460.64
  6. Step 6: Final answer
    x = 349.97

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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.