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Finding the Fourth Proportional to 296.94, 410.30 and 286.18

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Solution

The fourth proportional to 296.94, 410.30 and 286.18 is: 395.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.94 : 410.30 = 286.18 : x
  2. Step 2: Convert to fraction form
    296.94/410.30 = 286.18/x
  3. Step 3: Cross multiply
    296.94x = 410.30 × 286.18
  4. Step 4: Simplify right side
    296.94x = 117,419.65
  5. Step 5: Solve for x
    x = 117,419.65/296.94
  6. Step 6: Final answer
    x = 395.43

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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.