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Finding the Fourth Proportional to 1,094.28, 1,641.81 and 509.55

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Solution

The fourth proportional to 1,094.28, 1,641.81 and 509.55 is: 764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,094.28 : 1,641.81 = 509.55 : x
  2. Step 2: Convert to fraction form
    1,094.28/1,641.81 = 509.55/x
  3. Step 3: Cross multiply
    1,094.28x = 1,641.81 × 509.55
  4. Step 4: Simplify right side
    1,094.28x = 836,584.29
  5. Step 5: Solve for x
    x = 836,584.29/1,094.28
  6. Step 6: Final answer
    x = 764.51

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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.