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Finding the Fourth Proportional to 1,644.28, 2,269.08 and 898.24

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Solution

The fourth proportional to 1,644.28, 2,269.08 and 898.24 is: 1,239.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.28 : 2,269.08 = 898.24 : x
  2. Step 2: Convert to fraction form
    1,644.28/2,269.08 = 898.24/x
  3. Step 3: Cross multiply
    1,644.28x = 2,269.08 × 898.24
  4. Step 4: Simplify right side
    1,644.28x = 2,038,178.42
  5. Step 5: Solve for x
    x = 2,038,178.42/1,644.28
  6. Step 6: Final answer
    x = 1,239.56

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1.5x scale

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.