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Finding the Fourth Proportional to 952.63, 1,311.90 and 818.77

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Solution

The fourth proportional to 952.63, 1,311.90 and 818.77 is: 1,127.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.63 : 1,311.90 = 818.77 : x
  2. Step 2: Convert to fraction form
    952.63/1,311.90 = 818.77/x
  3. Step 3: Cross multiply
    952.63x = 1,311.90 × 818.77
  4. Step 4: Simplify right side
    952.63x = 1,074,144.36
  5. Step 5: Solve for x
    x = 1,074,144.36/952.63
  6. Step 6: Final answer
    x = 1,127.56

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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.