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Finding the Fourth Proportional to 483.62, 721.15 and 426.08

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Solution

The fourth proportional to 483.62, 721.15 and 426.08 is: 635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.62 : 721.15 = 426.08 : x
  2. Step 2: Convert to fraction form
    483.62/721.15 = 426.08/x
  3. Step 3: Cross multiply
    483.62x = 721.15 × 426.08
  4. Step 4: Simplify right side
    483.62x = 307,267.59
  5. Step 5: Solve for x
    x = 307,267.59/483.62
  6. Step 6: Final answer
    x = 635.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.