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Finding the Fourth Proportional to 397.36, 595.75 and 286.24

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Solution

The fourth proportional to 397.36, 595.75 and 286.24 is: 429.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.36 : 595.75 = 286.24 : x
  2. Step 2: Convert to fraction form
    397.36/595.75 = 286.24/x
  3. Step 3: Cross multiply
    397.36x = 595.75 × 286.24
  4. Step 4: Simplify right side
    397.36x = 170,527.48
  5. Step 5: Solve for x
    x = 170,527.48/397.36
  6. Step 6: Final answer
    x = 429.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.