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Finding the Fourth Proportional to 866.64, 1,194.12 and 760.92

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Solution

The fourth proportional to 866.64, 1,194.12 and 760.92 is: 1,048.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.64 : 1,194.12 = 760.92 : x
  2. Step 2: Convert to fraction form
    866.64/1,194.12 = 760.92/x
  3. Step 3: Cross multiply
    866.64x = 1,194.12 × 760.92
  4. Step 4: Simplify right side
    866.64x = 908,629.79
  5. Step 5: Solve for x
    x = 908,629.79/866.64
  6. Step 6: Final answer
    x = 1,048.45

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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.