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Finding the Fourth Proportional to 1,322.82, 1,825.56 and 763.32

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Solution

The fourth proportional to 1,322.82, 1,825.56 and 763.32 is: 1,053.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.82 : 1,825.56 = 763.32 : x
  2. Step 2: Convert to fraction form
    1,322.82/1,825.56 = 763.32/x
  3. Step 3: Cross multiply
    1,322.82x = 1,825.56 × 763.32
  4. Step 4: Simplify right side
    1,322.82x = 1,393,486.46
  5. Step 5: Solve for x
    x = 1,393,486.46/1,322.82
  6. Step 6: Final answer
    x = 1,053.42

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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.