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Finding the Fourth Proportional to 835.36, 1,252.08 and 618.76

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Solution

The fourth proportional to 835.36, 1,252.08 and 618.76 is: 927.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.36 : 1,252.08 = 618.76 : x
  2. Step 2: Convert to fraction form
    835.36/1,252.08 = 618.76/x
  3. Step 3: Cross multiply
    835.36x = 1,252.08 × 618.76
  4. Step 4: Simplify right side
    835.36x = 774,737.02
  5. Step 5: Solve for x
    x = 774,737.02/835.36
  6. Step 6: Final answer
    x = 927.43

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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.