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Finding the Fourth Proportional to 1,706.20, 2,559.31 and 551.95

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Solution

The fourth proportional to 1,706.20, 2,559.31 and 551.95 is: 827.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,706.20 : 2,559.31 = 551.95 : x
  2. Step 2: Convert to fraction form
    1,706.20/2,559.31 = 551.95/x
  3. Step 3: Cross multiply
    1,706.20x = 2,559.31 × 551.95
  4. Step 4: Simplify right side
    1,706.20x = 1,412,611.15
  5. Step 5: Solve for x
    x = 1,412,611.15/1,706.20
  6. Step 6: Final answer
    x = 827.93

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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.