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Finding the Fourth Proportional to 1,302.72, 1,950.24 and 1,172.16

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Solution

The fourth proportional to 1,302.72, 1,950.24 and 1,172.16 is: 1,754.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.72 : 1,950.24 = 1,172.16 : x
  2. Step 2: Convert to fraction form
    1,302.72/1,950.24 = 1,172.16/x
  3. Step 3: Cross multiply
    1,302.72x = 1,950.24 × 1,172.16
  4. Step 4: Simplify right side
    1,302.72x = 2,285,993.32
  5. Step 5: Solve for x
    x = 2,285,993.32/1,302.72
  6. Step 6: Final answer
    x = 1,754.78

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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.