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Finding the Fourth Proportional to 1,099.02, 1,515.87 and 750.54

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Solution

The fourth proportional to 1,099.02, 1,515.87 and 750.54 is: 1,035.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.02 : 1,515.87 = 750.54 : x
  2. Step 2: Convert to fraction form
    1,099.02/1,515.87 = 750.54/x
  3. Step 3: Cross multiply
    1,099.02x = 1,515.87 × 750.54
  4. Step 4: Simplify right side
    1,099.02x = 1,137,721.07
  5. Step 5: Solve for x
    x = 1,137,721.07/1,099.02
  6. Step 6: Final answer
    x = 1,035.21

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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.