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Finding the Fourth Proportional to 459.68, 634.08 and 401.60

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Solution

The fourth proportional to 459.68, 634.08 and 401.60 is: 553.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.68 : 634.08 = 401.60 : x
  2. Step 2: Convert to fraction form
    459.68/634.08 = 401.60/x
  3. Step 3: Cross multiply
    459.68x = 634.08 × 401.60
  4. Step 4: Simplify right side
    459.68x = 254,646.53
  5. Step 5: Solve for x
    x = 254,646.53/459.68
  6. Step 6: Final answer
    x = 553.96

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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.