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Finding the Fourth Proportional to 1,304.40, 1,956.52 and 611.23

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Solution

The fourth proportional to 1,304.40, 1,956.52 and 611.23 is: 916.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.40 : 1,956.52 = 611.23 : x
  2. Step 2: Convert to fraction form
    1,304.40/1,956.52 = 611.23/x
  3. Step 3: Cross multiply
    1,304.40x = 1,956.52 × 611.23
  4. Step 4: Simplify right side
    1,304.40x = 1,195,874.32
  5. Step 5: Solve for x
    x = 1,195,874.32/1,304.40
  6. Step 6: Final answer
    x = 916.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.