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Finding the Fourth Proportional to 504.56, 755.88 and 287.48

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Solution

The fourth proportional to 504.56, 755.88 and 287.48 is: 430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.56 : 755.88 = 287.48 : x
  2. Step 2: Convert to fraction form
    504.56/755.88 = 287.48/x
  3. Step 3: Cross multiply
    504.56x = 755.88 × 287.48
  4. Step 4: Simplify right side
    504.56x = 217,300.38
  5. Step 5: Solve for x
    x = 217,300.38/504.56
  6. Step 6: Final answer
    x = 430.67

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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.