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Finding the Fourth Proportional to 286.58, 430.17 and 233.12

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Solution

The fourth proportional to 286.58, 430.17 and 233.12 is: 349.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.58 : 430.17 = 233.12 : x
  2. Step 2: Convert to fraction form
    286.58/430.17 = 233.12/x
  3. Step 3: Cross multiply
    286.58x = 430.17 × 233.12
  4. Step 4: Simplify right side
    286.58x = 100,281.23
  5. Step 5: Solve for x
    x = 100,281.23/286.58
  6. Step 6: Final answer
    x = 349.92

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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.