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Finding the Fourth Proportional to 1,206.16, 1,664.08 and 682.08

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Solution

The fourth proportional to 1,206.16, 1,664.08 and 682.08 is: 941.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206.16 : 1,664.08 = 682.08 : x
  2. Step 2: Convert to fraction form
    1,206.16/1,664.08 = 682.08/x
  3. Step 3: Cross multiply
    1,206.16x = 1,664.08 × 682.08
  4. Step 4: Simplify right side
    1,206.16x = 1,135,035.69
  5. Step 5: Solve for x
    x = 1,135,035.69/1,206.16
  6. Step 6: Final answer
    x = 941.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.