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Finding the Fourth Proportional to 783.84, 1,168.77 and 774.27

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Solution

The fourth proportional to 783.84, 1,168.77 and 774.27 is: 1,154.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    783.84 : 1,168.77 = 774.27 : x
  2. Step 2: Convert to fraction form
    783.84/1,168.77 = 774.27/x
  3. Step 3: Cross multiply
    783.84x = 1,168.77 × 774.27
  4. Step 4: Simplify right side
    783.84x = 904,943.55
  5. Step 5: Solve for x
    x = 904,943.55/783.84
  6. Step 6: Final answer
    x = 1,154.50

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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.