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Finding the Fourth Proportional to 1,792.05, 2,688.35 and 559.19

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Solution

The fourth proportional to 1,792.05, 2,688.35 and 559.19 is: 838.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.05 : 2,688.35 = 559.19 : x
  2. Step 2: Convert to fraction form
    1,792.05/2,688.35 = 559.19/x
  3. Step 3: Cross multiply
    1,792.05x = 2,688.35 × 559.19
  4. Step 4: Simplify right side
    1,792.05x = 1,503,302.36
  5. Step 5: Solve for x
    x = 1,503,302.36/1,792.05
  6. Step 6: Final answer
    x = 838.87

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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.