Home / 1,147.20-1,583.13-623.23

Finding the Fourth Proportional to 1,147.20, 1,583.13 and 623.23

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Solution

The fourth proportional to 1,147.20, 1,583.13 and 623.23 is: 860.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,147.20 : 1,583.13 = 623.23 : x
  2. Step 2: Convert to fraction form
    1,147.20/1,583.13 = 623.23/x
  3. Step 3: Cross multiply
    1,147.20x = 1,583.13 × 623.23
  4. Step 4: Simplify right side
    1,147.20x = 986,654.11
  5. Step 5: Solve for x
    x = 986,654.11/1,147.20
  6. Step 6: Final answer
    x = 860.05

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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.