Home / 1,065.22-1,469.78-623.03

Finding the Fourth Proportional to 1,065.22, 1,469.78 and 623.03

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Solution

The fourth proportional to 1,065.22, 1,469.78 and 623.03 is: 859.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,065.22 : 1,469.78 = 623.03 : x
  2. Step 2: Convert to fraction form
    1,065.22/1,469.78 = 623.03/x
  3. Step 3: Cross multiply
    1,065.22x = 1,469.78 × 623.03
  4. Step 4: Simplify right side
    1,065.22x = 915,717.03
  5. Step 5: Solve for x
    x = 915,717.03/1,065.22
  6. Step 6: Final answer
    x = 859.65

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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.