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Finding the Fourth Proportional to 794.93, 1,192.40 and 776.71

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Solution

The fourth proportional to 794.93, 1,192.40 and 776.71 is: 1,165.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.93 : 1,192.40 = 776.71 : x
  2. Step 2: Convert to fraction form
    794.93/1,192.40 = 776.71/x
  3. Step 3: Cross multiply
    794.93x = 1,192.40 × 776.71
  4. Step 4: Simplify right side
    794.93x = 926,139.16
  5. Step 5: Solve for x
    x = 926,139.16/794.93
  6. Step 6: Final answer
    x = 1,165.06

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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.