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Finding the Fourth Proportional to 331.45, 457.36 and 265.93

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Solution

The fourth proportional to 331.45, 457.36 and 265.93 is: 366.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.45 : 457.36 = 265.93 : x
  2. Step 2: Convert to fraction form
    331.45/457.36 = 265.93/x
  3. Step 3: Cross multiply
    331.45x = 457.36 × 265.93
  4. Step 4: Simplify right side
    331.45x = 121,625.74
  5. Step 5: Solve for x
    x = 121,625.74/331.45
  6. Step 6: Final answer
    x = 366.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.