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Finding the Fourth Proportional to 459.95, 634.70 and 250.11

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Solution

The fourth proportional to 459.95, 634.70 and 250.11 is: 345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.95 : 634.70 = 250.11 : x
  2. Step 2: Convert to fraction form
    459.95/634.70 = 250.11/x
  3. Step 3: Cross multiply
    459.95x = 634.70 × 250.11
  4. Step 4: Simplify right side
    459.95x = 158,745.44
  5. Step 5: Solve for x
    x = 158,745.44/459.95
  6. Step 6: Final answer
    x = 345.14

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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.