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Finding the Fourth Proportional to 1,322.75, 1,825.48 and 763.32

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Solution

The fourth proportional to 1,322.75, 1,825.48 and 763.32 is: 1,053.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.75 : 1,825.48 = 763.32 : x
  2. Step 2: Convert to fraction form
    1,322.75/1,825.48 = 763.32/x
  3. Step 3: Cross multiply
    1,322.75x = 1,825.48 × 763.32
  4. Step 4: Simplify right side
    1,322.75x = 1,393,433.19
  5. Step 5: Solve for x
    x = 1,393,433.19/1,322.75
  6. Step 6: Final answer
    x = 1,053.43

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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.