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Finding the Fourth Proportional to 305.07, 457.25 and 131.68

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Solution

The fourth proportional to 305.07, 457.25 and 131.68 is: 197.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.07 : 457.25 = 131.68 : x
  2. Step 2: Convert to fraction form
    305.07/457.25 = 131.68/x
  3. Step 3: Cross multiply
    305.07x = 457.25 × 131.68
  4. Step 4: Simplify right side
    305.07x = 60,208.02
  5. Step 5: Solve for x
    x = 60,208.02/305.07
  6. Step 6: Final answer
    x = 197.36

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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.