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Finding the Fourth Proportional to 1,100.84, 1,650.90 and 711.26

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Solution

The fourth proportional to 1,100.84, 1,650.90 and 711.26 is: 1,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.84 : 1,650.90 = 711.26 : x
  2. Step 2: Convert to fraction form
    1,100.84/1,650.90 = 711.26/x
  3. Step 3: Cross multiply
    1,100.84x = 1,650.90 × 711.26
  4. Step 4: Simplify right side
    1,100.84x = 1,174,219.13
  5. Step 5: Solve for x
    x = 1,174,219.13/1,100.84
  6. Step 6: Final answer
    x = 1,066.66

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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.