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Finding the Fourth Proportional to 1,684.62, 2,527.38 and 990.06

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Solution

The fourth proportional to 1,684.62, 2,527.38 and 990.06 is: 1,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.62 : 2,527.38 = 990.06 : x
  2. Step 2: Convert to fraction form
    1,684.62/2,527.38 = 990.06/x
  3. Step 3: Cross multiply
    1,684.62x = 2,527.38 × 990.06
  4. Step 4: Simplify right side
    1,684.62x = 2,502,257.84
  5. Step 5: Solve for x
    x = 2,502,257.84/1,684.62
  6. Step 6: Final answer
    x = 1,485.35

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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.