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Finding the Fourth Proportional to 369.56, 509.87 and 276.64

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Solution

The fourth proportional to 369.56, 509.87 and 276.64 is: 381.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.56 : 509.87 = 276.64 : x
  2. Step 2: Convert to fraction form
    369.56/509.87 = 276.64/x
  3. Step 3: Cross multiply
    369.56x = 509.87 × 276.64
  4. Step 4: Simplify right side
    369.56x = 141,050.44
  5. Step 5: Solve for x
    x = 141,050.44/369.56
  6. Step 6: Final answer
    x = 381.67

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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.