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Finding the Fourth Proportional to 1,147.77, 1,583.04 and 774.16

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Solution

The fourth proportional to 1,147.77, 1,583.04 and 774.16 is: 1,067.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.77 : 1,583.04 = 774.16 : x
  2. Step 2: Convert to fraction form
    1,147.77/1,583.04 = 774.16/x
  3. Step 3: Cross multiply
    1,147.77x = 1,583.04 × 774.16
  4. Step 4: Simplify right side
    1,147.77x = 1,225,526.25
  5. Step 5: Solve for x
    x = 1,225,526.25/1,147.77
  6. Step 6: Final answer
    x = 1,067.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.