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Finding the Fourth Proportional to 454.60, 681.86 and 146.37

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Solution

The fourth proportional to 454.60, 681.86 and 146.37 is: 219.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.60 : 681.86 = 146.37 : x
  2. Step 2: Convert to fraction form
    454.60/681.86 = 146.37/x
  3. Step 3: Cross multiply
    454.60x = 681.86 × 146.37
  4. Step 4: Simplify right side
    454.60x = 99,803.85
  5. Step 5: Solve for x
    x = 99,803.85/454.60
  6. Step 6: Final answer
    x = 219.54

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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.