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Finding the Fourth Proportional to 1,107.36, 1,660.68 and 522.18

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Solution

The fourth proportional to 1,107.36, 1,660.68 and 522.18 is: 783.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107.36 : 1,660.68 = 522.18 : x
  2. Step 2: Convert to fraction form
    1,107.36/1,660.68 = 522.18/x
  3. Step 3: Cross multiply
    1,107.36x = 1,660.68 × 522.18
  4. Step 4: Simplify right side
    1,107.36x = 867,173.88
  5. Step 5: Solve for x
    x = 867,173.88/1,107.36
  6. Step 6: Final answer
    x = 783.10

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Double scale
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1.5x scale

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.