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Finding the Fourth Proportional to 418, 625.56 and 403.60

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Solution

The fourth proportional to 418, 625.56 and 403.60 is: 604.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    418 : 625.56 = 403.60 : x
  2. Step 2: Convert to fraction form
    418/625.56 = 403.60/x
  3. Step 3: Cross multiply
    418x = 625.56 × 403.60
  4. Step 4: Simplify right side
    418x = 252,476.02
  5. Step 5: Solve for x
    x = 252,476.02/418
  6. Step 6: Final answer
    x = 604.01

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.