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Finding the Fourth Proportional to 1,133.48, 1,696.88 and 1,105.54

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Solution

The fourth proportional to 1,133.48, 1,696.88 and 1,105.54 is: 1,655.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.48 : 1,696.88 = 1,105.54 : x
  2. Step 2: Convert to fraction form
    1,133.48/1,696.88 = 1,105.54/x
  3. Step 3: Cross multiply
    1,133.48x = 1,696.88 × 1,105.54
  4. Step 4: Simplify right side
    1,133.48x = 1,875,967.24
  5. Step 5: Solve for x
    x = 1,875,967.24/1,133.48
  6. Step 6: Final answer
    x = 1,655.05

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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.