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Finding the Fourth Proportional to 459.60, 634.11 and 401.19

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Solution

The fourth proportional to 459.60, 634.11 and 401.19 is: 553.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.60 : 634.11 = 401.19 : x
  2. Step 2: Convert to fraction form
    459.60/634.11 = 401.19/x
  3. Step 3: Cross multiply
    459.60x = 634.11 × 401.19
  4. Step 4: Simplify right side
    459.60x = 254,398.59
  5. Step 5: Solve for x
    x = 254,398.59/459.60
  6. Step 6: Final answer
    x = 553.52

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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.