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Finding the Fourth Proportional to 460.59, 634.63 and 385.64

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Solution

The fourth proportional to 460.59, 634.63 and 385.64 is: 531.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.59 : 634.63 = 385.64 : x
  2. Step 2: Convert to fraction form
    460.59/634.63 = 385.64/x
  3. Step 3: Cross multiply
    460.59x = 634.63 × 385.64
  4. Step 4: Simplify right side
    460.59x = 244,738.71
  5. Step 5: Solve for x
    x = 244,738.71/460.59
  6. Step 6: Final answer
    x = 531.36

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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.