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Finding the Fourth Proportional to 454.83, 682.35 and 146.71

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Solution

The fourth proportional to 454.83, 682.35 and 146.71 is: 220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.83 : 682.35 = 146.71 : x
  2. Step 2: Convert to fraction form
    454.83/682.35 = 146.71/x
  3. Step 3: Cross multiply
    454.83x = 682.35 × 146.71
  4. Step 4: Simplify right side
    454.83x = 100,107.57
  5. Step 5: Solve for x
    x = 100,107.57/454.83
  6. Step 6: Final answer
    x = 220.10

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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.