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Finding the Fourth Proportional to 1,636.34, 2,454.41 and 403.74

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Solution

The fourth proportional to 1,636.34, 2,454.41 and 403.74 is: 605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.34 : 2,454.41 = 403.74 : x
  2. Step 2: Convert to fraction form
    1,636.34/2,454.41 = 403.74/x
  3. Step 3: Cross multiply
    1,636.34x = 2,454.41 × 403.74
  4. Step 4: Simplify right side
    1,636.34x = 990,944.50
  5. Step 5: Solve for x
    x = 990,944.50/1,636.34
  6. Step 6: Final answer
    x = 605.59

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Why These Related Problems?

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