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Finding the Fourth Proportional to 262.64, 391.16 and 245.77

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Solution

The fourth proportional to 262.64, 391.16 and 245.77 is: 366.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.64 : 391.16 = 245.77 : x
  2. Step 2: Convert to fraction form
    262.64/391.16 = 245.77/x
  3. Step 3: Cross multiply
    262.64x = 391.16 × 245.77
  4. Step 4: Simplify right side
    262.64x = 96,135.03
  5. Step 5: Solve for x
    x = 96,135.03/262.64
  6. Step 6: Final answer
    x = 366.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.