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Finding the Fourth Proportional to 1,084.40, 1,496.04 and 730.88

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Solution

The fourth proportional to 1,084.40, 1,496.04 and 730.88 is: 1,008.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,084.40 : 1,496.04 = 730.88 : x
  2. Step 2: Convert to fraction form
    1,084.40/1,496.04 = 730.88/x
  3. Step 3: Cross multiply
    1,084.40x = 1,496.04 × 730.88
  4. Step 4: Simplify right side
    1,084.40x = 1,093,425.72
  5. Step 5: Solve for x
    x = 1,093,425.72/1,084.40
  6. Step 6: Final answer
    x = 1,008.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.