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Finding the Fourth Proportional to 460.48, 635.28 and 320.56

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Solution

The fourth proportional to 460.48, 635.28 and 320.56 is: 442.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.48 : 635.28 = 320.56 : x
  2. Step 2: Convert to fraction form
    460.48/635.28 = 320.56/x
  3. Step 3: Cross multiply
    460.48x = 635.28 × 320.56
  4. Step 4: Simplify right side
    460.48x = 203,645.36
  5. Step 5: Solve for x
    x = 203,645.36/460.48
  6. Step 6: Final answer
    x = 442.25

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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.