Home / 1,147.25-1,583.17-623.28

Finding the Fourth Proportional to 1,147.25, 1,583.17 and 623.28

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Solution

The fourth proportional to 1,147.25, 1,583.17 and 623.28 is: 860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.25 : 1,583.17 = 623.28 : x
  2. Step 2: Convert to fraction form
    1,147.25/1,583.17 = 623.28/x
  3. Step 3: Cross multiply
    1,147.25x = 1,583.17 × 623.28
  4. Step 4: Simplify right side
    1,147.25x = 986,758.20
  5. Step 5: Solve for x
    x = 986,758.20/1,147.25
  6. Step 6: Final answer
    x = 860.11

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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.