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Finding the Fourth Proportional to 1,636.67, 2,455.19 and 482.42

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Solution

The fourth proportional to 1,636.67, 2,455.19 and 482.42 is: 723.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.67 : 2,455.19 = 482.42 : x
  2. Step 2: Convert to fraction form
    1,636.67/2,455.19 = 482.42/x
  3. Step 3: Cross multiply
    1,636.67x = 2,455.19 × 482.42
  4. Step 4: Simplify right side
    1,636.67x = 1,184,432.76
  5. Step 5: Solve for x
    x = 1,184,432.76/1,636.67
  6. Step 6: Final answer
    x = 723.68

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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.