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Finding the Fourth Proportional to 460.55, 635.61 and 285.92

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Solution

The fourth proportional to 460.55, 635.61 and 285.92 is: 394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.55 : 635.61 = 285.92 : x
  2. Step 2: Convert to fraction form
    460.55/635.61 = 285.92/x
  3. Step 3: Cross multiply
    460.55x = 635.61 × 285.92
  4. Step 4: Simplify right side
    460.55x = 181,730.43
  5. Step 5: Solve for x
    x = 181,730.43/460.55
  6. Step 6: Final answer
    x = 394.60

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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.