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Finding the Fourth Proportional to 1,276.03, 1,912.65 and 546.04

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Solution

The fourth proportional to 1,276.03, 1,912.65 and 546.04 is: 818.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.03 : 1,912.65 = 546.04 : x
  2. Step 2: Convert to fraction form
    1,276.03/1,912.65 = 546.04/x
  3. Step 3: Cross multiply
    1,276.03x = 1,912.65 × 546.04
  4. Step 4: Simplify right side
    1,276.03x = 1,044,383.41
  5. Step 5: Solve for x
    x = 1,044,383.41/1,276.03
  6. Step 6: Final answer
    x = 818.46

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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.