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Finding the Fourth Proportional to 1,114.31, 1,668.87 and 565.16

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Solution

The fourth proportional to 1,114.31, 1,668.87 and 565.16 is: 846.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,114.31 : 1,668.87 = 565.16 : x
  2. Step 2: Convert to fraction form
    1,114.31/1,668.87 = 565.16/x
  3. Step 3: Cross multiply
    1,114.31x = 1,668.87 × 565.16
  4. Step 4: Simplify right side
    1,114.31x = 943,178.57
  5. Step 5: Solve for x
    x = 943,178.57/1,114.31
  6. Step 6: Final answer
    x = 846.42

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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.