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Finding the Fourth Proportional to 460.91, 635.93 and 320.87

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Solution

The fourth proportional to 460.91, 635.93 and 320.87 is: 442.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.91 : 635.93 = 320.87 : x
  2. Step 2: Convert to fraction form
    460.91/635.93 = 320.87/x
  3. Step 3: Cross multiply
    460.91x = 635.93 × 320.87
  4. Step 4: Simplify right side
    460.91x = 204,050.86
  5. Step 5: Solve for x
    x = 204,050.86/460.91
  6. Step 6: Final answer
    x = 442.71

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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.