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Finding the Fourth Proportional to 866.66, 1,195.95 and 473.69

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Solution

The fourth proportional to 866.66, 1,195.95 and 473.69 is: 653.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.66 : 1,195.95 = 473.69 : x
  2. Step 2: Convert to fraction form
    866.66/1,195.95 = 473.69/x
  3. Step 3: Cross multiply
    866.66x = 1,195.95 × 473.69
  4. Step 4: Simplify right side
    866.66x = 566,504.17
  5. Step 5: Solve for x
    x = 566,504.17/866.66
  6. Step 6: Final answer
    x = 653.66

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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.