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Finding the Fourth Proportional to 1,801.05, 2,699.97 and 706.20

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Solution

The fourth proportional to 1,801.05, 2,699.97 and 706.20 is: 1,058.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,801.05 : 2,699.97 = 706.20 : x
  2. Step 2: Convert to fraction form
    1,801.05/2,699.97 = 706.20/x
  3. Step 3: Cross multiply
    1,801.05x = 2,699.97 × 706.20
  4. Step 4: Simplify right side
    1,801.05x = 1,906,718.81
  5. Step 5: Solve for x
    x = 1,906,718.81/1,801.05
  6. Step 6: Final answer
    x = 1,058.67

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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.