Home / 1,102.32-1,521.17-623.73

Finding the Fourth Proportional to 1,102.32, 1,521.17 and 623.73

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Solution

The fourth proportional to 1,102.32, 1,521.17 and 623.73 is: 860.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,102.32 : 1,521.17 = 623.73 : x
  2. Step 2: Convert to fraction form
    1,102.32/1,521.17 = 623.73/x
  3. Step 3: Cross multiply
    1,102.32x = 1,521.17 × 623.73
  4. Step 4: Simplify right side
    1,102.32x = 948,799.36
  5. Step 5: Solve for x
    x = 948,799.36/1,102.32
  6. Step 6: Final answer
    x = 860.73

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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.