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Finding the Fourth Proportional to 504.32, 755.78 and 287.44

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Solution

The fourth proportional to 504.32, 755.78 and 287.44 is: 430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.32 : 755.78 = 287.44 : x
  2. Step 2: Convert to fraction form
    504.32/755.78 = 287.44/x
  3. Step 3: Cross multiply
    504.32x = 755.78 × 287.44
  4. Step 4: Simplify right side
    504.32x = 217,241.40
  5. Step 5: Solve for x
    x = 217,241.40/504.32
  6. Step 6: Final answer
    x = 430.76

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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.