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Finding the Fourth Proportional to 1,554.08, 2,329.22 and 860.72

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Solution

The fourth proportional to 1,554.08, 2,329.22 and 860.72 is: 1,290.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.08 : 2,329.22 = 860.72 : x
  2. Step 2: Convert to fraction form
    1,554.08/2,329.22 = 860.72/x
  3. Step 3: Cross multiply
    1,554.08x = 2,329.22 × 860.72
  4. Step 4: Simplify right side
    1,554.08x = 2,004,806.24
  5. Step 5: Solve for x
    x = 2,004,806.24/1,554.08
  6. Step 6: Final answer
    x = 1,290.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.