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Finding the Fourth Proportional to 867.72, 1,197 and 606.36

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Solution

The fourth proportional to 867.72, 1,197 and 606.36 is: 836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    867.72 : 1,197 = 606.36 : x
  2. Step 2: Convert to fraction form
    867.72/1,197 = 606.36/x
  3. Step 3: Cross multiply
    867.72x = 1,197 × 606.36
  4. Step 4: Simplify right side
    867.72x = 725,812.92
  5. Step 5: Solve for x
    x = 725,812.92/867.72
  6. Step 6: Final answer
    x = 836.46

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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.