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Finding the Fourth Proportional to 1,436.82, 2,155.68 and 604.32

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Solution

The fourth proportional to 1,436.82, 2,155.68 and 604.32 is: 906.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436.82 : 2,155.68 = 604.32 : x
  2. Step 2: Convert to fraction form
    1,436.82/2,155.68 = 604.32/x
  3. Step 3: Cross multiply
    1,436.82x = 2,155.68 × 604.32
  4. Step 4: Simplify right side
    1,436.82x = 1,302,720.54
  5. Step 5: Solve for x
    x = 1,302,720.54/1,436.82
  6. Step 6: Final answer
    x = 906.67

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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.