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Finding the Fourth Proportional to 460.08, 635.25 and 320.40

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Solution

The fourth proportional to 460.08, 635.25 and 320.40 is: 442.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.08 : 635.25 = 320.40 : x
  2. Step 2: Convert to fraction form
    460.08/635.25 = 320.40/x
  3. Step 3: Cross multiply
    460.08x = 635.25 × 320.40
  4. Step 4: Simplify right side
    460.08x = 203,534.10
  5. Step 5: Solve for x
    x = 203,534.10/460.08
  6. Step 6: Final answer
    x = 442.39

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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.