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Finding the Fourth Proportional to 459.61, 634.30 and 263.15

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Solution

The fourth proportional to 459.61, 634.30 and 263.15 is: 363.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.61 : 634.30 = 263.15 : x
  2. Step 2: Convert to fraction form
    459.61/634.30 = 263.15/x
  3. Step 3: Cross multiply
    459.61x = 634.30 × 263.15
  4. Step 4: Simplify right side
    459.61x = 166,914.59
  5. Step 5: Solve for x
    x = 166,914.59/459.61
  6. Step 6: Final answer
    x = 363.17

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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.