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Finding the Fourth Proportional to 410.81, 566.67 and 286.25

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Solution

The fourth proportional to 410.81, 566.67 and 286.25 is: 394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.81 : 566.67 = 286.25 : x
  2. Step 2: Convert to fraction form
    410.81/566.67 = 286.25/x
  3. Step 3: Cross multiply
    410.81x = 566.67 × 286.25
  4. Step 4: Simplify right side
    410.81x = 162,206.45
  5. Step 5: Solve for x
    x = 162,206.45/410.81
  6. Step 6: Final answer
    x = 394.85

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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.