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Finding the Fourth Proportional to 454.21, 681.06 and 157.58

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Solution

The fourth proportional to 454.21, 681.06 and 157.58 is: 236.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.21 : 681.06 = 157.58 : x
  2. Step 2: Convert to fraction form
    454.21/681.06 = 157.58/x
  3. Step 3: Cross multiply
    454.21x = 681.06 × 157.58
  4. Step 4: Simplify right side
    454.21x = 107,324.42
  5. Step 5: Solve for x
    x = 107,324.42/454.21
  6. Step 6: Final answer
    x = 236.29

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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.