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Finding the Fourth Proportional to 1,141.08, 1,575.44 and 699.23

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Solution

The fourth proportional to 1,141.08, 1,575.44 and 699.23 is: 965.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,141.08 : 1,575.44 = 699.23 : x
  2. Step 2: Convert to fraction form
    1,141.08/1,575.44 = 699.23/x
  3. Step 3: Cross multiply
    1,141.08x = 1,575.44 × 699.23
  4. Step 4: Simplify right side
    1,141.08x = 1,101,583.54
  5. Step 5: Solve for x
    x = 1,101,583.54/1,141.08
  6. Step 6: Final answer
    x = 965.39

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1.5x scale

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.