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Finding the Fourth Proportional to 1,199.07, 1,652.25 and 919.29

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Solution

The fourth proportional to 1,199.07, 1,652.25 and 919.29 is: 1,266.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.07 : 1,652.25 = 919.29 : x
  2. Step 2: Convert to fraction form
    1,199.07/1,652.25 = 919.29/x
  3. Step 3: Cross multiply
    1,199.07x = 1,652.25 × 919.29
  4. Step 4: Simplify right side
    1,199.07x = 1,518,896.90
  5. Step 5: Solve for x
    x = 1,518,896.90/1,199.07
  6. Step 6: Final answer
    x = 1,266.73

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Why These Related Problems?

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