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Finding the Fourth Proportional to 837.77, 1,252.10 and 772.11

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Solution

The fourth proportional to 837.77, 1,252.10 and 772.11 is: 1,153.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.77 : 1,252.10 = 772.11 : x
  2. Step 2: Convert to fraction form
    837.77/1,252.10 = 772.11/x
  3. Step 3: Cross multiply
    837.77x = 1,252.10 × 772.11
  4. Step 4: Simplify right side
    837.77x = 966,760.86
  5. Step 5: Solve for x
    x = 966,760.86/837.77
  6. Step 6: Final answer
    x = 1,153.98

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1.5x scale

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.