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Finding the Fourth Proportional to 1,572.80, 2,360.96 and 996

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Solution

The fourth proportional to 1,572.80, 2,360.96 and 996 is: 1,495.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572.80 : 2,360.96 = 996 : x
  2. Step 2: Convert to fraction form
    1,572.80/2,360.96 = 996/x
  3. Step 3: Cross multiply
    1,572.80x = 2,360.96 × 996
  4. Step 4: Simplify right side
    1,572.80x = 2,351,516.16
  5. Step 5: Solve for x
    x = 2,351,516.16/1,572.80
  6. Step 6: Final answer
    x = 1,495.11

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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.