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Finding the Fourth Proportional to 1,368.28, 2,052.57 and 546.55

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Solution

The fourth proportional to 1,368.28, 2,052.57 and 546.55 is: 819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.28 : 2,052.57 = 546.55 : x
  2. Step 2: Convert to fraction form
    1,368.28/2,052.57 = 546.55/x
  3. Step 3: Cross multiply
    1,368.28x = 2,052.57 × 546.55
  4. Step 4: Simplify right side
    1,368.28x = 1,121,840.60
  5. Step 5: Solve for x
    x = 1,121,840.60/1,368.28
  6. Step 6: Final answer
    x = 819.89

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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.