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Finding the Fourth Proportional to 774, 1,156.05 and 700.76

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Solution

The fourth proportional to 774, 1,156.05 and 700.76 is: 1,046.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    774 : 1,156.05 = 700.76 : x
  2. Step 2: Convert to fraction form
    774/1,156.05 = 700.76/x
  3. Step 3: Cross multiply
    774x = 1,156.05 × 700.76
  4. Step 4: Simplify right side
    774x = 810,113.60
  5. Step 5: Solve for x
    x = 810,113.60/774
  6. Step 6: Final answer
    x = 1,046.66

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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.