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Finding the Fourth Proportional to 866.81, 1,196.20 and 473.84

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Solution

The fourth proportional to 866.81, 1,196.20 and 473.84 is: 653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.81 : 1,196.20 = 473.84 : x
  2. Step 2: Convert to fraction form
    866.81/1,196.20 = 473.84/x
  3. Step 3: Cross multiply
    866.81x = 1,196.20 × 473.84
  4. Step 4: Simplify right side
    866.81x = 566,806.51
  5. Step 5: Solve for x
    x = 566,806.51/866.81
  6. Step 6: Final answer
    x = 653.90

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Double scale
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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.