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Finding the Fourth Proportional to 1,113.09, 1,668.42 and 534.75

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Solution

The fourth proportional to 1,113.09, 1,668.42 and 534.75 is: 801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,113.09 : 1,668.42 = 534.75 : x
  2. Step 2: Convert to fraction form
    1,113.09/1,668.42 = 534.75/x
  3. Step 3: Cross multiply
    1,113.09x = 1,668.42 × 534.75
  4. Step 4: Simplify right side
    1,113.09x = 892,187.60
  5. Step 5: Solve for x
    x = 892,187.60/1,113.09
  6. Step 6: Final answer
    x = 801.54

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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.