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Finding the Fourth Proportional to 286.64, 430.08 and 250.64

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Solution

The fourth proportional to 286.64, 430.08 and 250.64 is: 376.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286.64 : 430.08 = 250.64 : x
  2. Step 2: Convert to fraction form
    286.64/430.08 = 250.64/x
  3. Step 3: Cross multiply
    286.64x = 430.08 × 250.64
  4. Step 4: Simplify right side
    286.64x = 107,795.25
  5. Step 5: Solve for x
    x = 107,795.25/286.64
  6. Step 6: Final answer
    x = 376.06

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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.