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Finding the Fourth Proportional to 1,606.83, 2,405.57 and 988.67

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Solution

The fourth proportional to 1,606.83, 2,405.57 and 988.67 is: 1,480.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,606.83 : 2,405.57 = 988.67 : x
  2. Step 2: Convert to fraction form
    1,606.83/2,405.57 = 988.67/x
  3. Step 3: Cross multiply
    1,606.83x = 2,405.57 × 988.67
  4. Step 4: Simplify right side
    1,606.83x = 2,378,297.92
  5. Step 5: Solve for x
    x = 2,378,297.92/1,606.83
  6. Step 6: Final answer
    x = 1,480.12

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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.