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Finding the Fourth Proportional to 1,644.55, 2,269.50 and 972.38

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Solution

The fourth proportional to 1,644.55, 2,269.50 and 972.38 is: 1,341.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.55 : 2,269.50 = 972.38 : x
  2. Step 2: Convert to fraction form
    1,644.55/2,269.50 = 972.38/x
  3. Step 3: Cross multiply
    1,644.55x = 2,269.50 × 972.38
  4. Step 4: Simplify right side
    1,644.55x = 2,206,816.41
  5. Step 5: Solve for x
    x = 2,206,816.41/1,644.55
  6. Step 6: Final answer
    x = 1,341.90

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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.