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Finding the Fourth Proportional to 1,119.54, 1,544 and 699.46

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Solution

The fourth proportional to 1,119.54, 1,544 and 699.46 is: 964.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.54 : 1,544 = 699.46 : x
  2. Step 2: Convert to fraction form
    1,119.54/1,544 = 699.46/x
  3. Step 3: Cross multiply
    1,119.54x = 1,544 × 699.46
  4. Step 4: Simplify right side
    1,119.54x = 1,079,966.24
  5. Step 5: Solve for x
    x = 1,079,966.24/1,119.54
  6. Step 6: Final answer
    x = 964.65

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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.