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Finding the Fourth Proportional to 459.92, 634.55 and 263.39

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Solution

The fourth proportional to 459.92, 634.55 and 263.39 is: 363.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.92 : 634.55 = 263.39 : x
  2. Step 2: Convert to fraction form
    459.92/634.55 = 263.39/x
  3. Step 3: Cross multiply
    459.92x = 634.55 × 263.39
  4. Step 4: Simplify right side
    459.92x = 167,136.37
  5. Step 5: Solve for x
    x = 167,136.37/459.92
  6. Step 6: Final answer
    x = 363.40

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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.