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Finding the Third Proportional to 760.32 and 1,639.30

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Solution

The third proportional to 760.32 and 1,639.30 is: 3,534.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.32 : 1,639.30 = 1,639.30 : x
  2. Step 2: Convert to fraction form
    760.32/1,639.30 = 1,639.30/x
  3. Step 3: Cross multiply
    760.32x = 1,639.30 × 1,639.30
  4. Step 4: Simplify right side
    760.32x = 2,687,307.05
  5. Step 5: Solve for x
    x = 2,687,307.05/760.32
  6. Step 6: Final answer
    x = 3,534.42

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.