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Finding the Fourth Proportional to 1,636.90, 2,455.71 and 482.62

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Solution

The fourth proportional to 1,636.90, 2,455.71 and 482.62 is: 724.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.90 : 2,455.71 = 482.62 : x
  2. Step 2: Convert to fraction form
    1,636.90/2,455.71 = 482.62/x
  3. Step 3: Cross multiply
    1,636.90x = 2,455.71 × 482.62
  4. Step 4: Simplify right side
    1,636.90x = 1,185,174.76
  5. Step 5: Solve for x
    x = 1,185,174.76/1,636.90
  6. Step 6: Final answer
    x = 724.04

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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.