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Finding the Fourth Proportional to 433.70, 598.26 and 286.28

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Solution

The fourth proportional to 433.70, 598.26 and 286.28 is: 394.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.70 : 598.26 = 286.28 : x
  2. Step 2: Convert to fraction form
    433.70/598.26 = 286.28/x
  3. Step 3: Cross multiply
    433.70x = 598.26 × 286.28
  4. Step 4: Simplify right side
    433.70x = 171,269.87
  5. Step 5: Solve for x
    x = 171,269.87/433.70
  6. Step 6: Final answer
    x = 394.90

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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.