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Finding the Fourth Proportional to 1,137.56, 1,706.33 and 488.75

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Solution

The fourth proportional to 1,137.56, 1,706.33 and 488.75 is: 733.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137.56 : 1,706.33 = 488.75 : x
  2. Step 2: Convert to fraction form
    1,137.56/1,706.33 = 488.75/x
  3. Step 3: Cross multiply
    1,137.56x = 1,706.33 × 488.75
  4. Step 4: Simplify right side
    1,137.56x = 833,957.81
  5. Step 5: Solve for x
    x = 833,957.81/1,137.56
  6. Step 6: Final answer
    x = 733.11

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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.