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Finding the Fourth Proportional to 1,362.56, 2,039.68 and 898.56

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Solution

The fourth proportional to 1,362.56, 2,039.68 and 898.56 is: 1,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.56 : 2,039.68 = 898.56 : x
  2. Step 2: Convert to fraction form
    1,362.56/2,039.68 = 898.56/x
  3. Step 3: Cross multiply
    1,362.56x = 2,039.68 × 898.56
  4. Step 4: Simplify right side
    1,362.56x = 1,832,774.86
  5. Step 5: Solve for x
    x = 1,832,774.86/1,362.56
  6. Step 6: Final answer
    x = 1,345.10

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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.