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Finding the Fourth Proportional to 1,072.46, 1,606.61 and 608.84

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Solution

The fourth proportional to 1,072.46, 1,606.61 and 608.84 is: 912.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072.46 : 1,606.61 = 608.84 : x
  2. Step 2: Convert to fraction form
    1,072.46/1,606.61 = 608.84/x
  3. Step 3: Cross multiply
    1,072.46x = 1,606.61 × 608.84
  4. Step 4: Simplify right side
    1,072.46x = 978,168.43
  5. Step 5: Solve for x
    x = 978,168.43/1,072.46
  6. Step 6: Final answer
    x = 912.08

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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.