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Finding the Fourth Proportional to 1,368.43, 2,051.54 and 546.48

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Solution

The fourth proportional to 1,368.43, 2,051.54 and 546.48 is: 819.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,368.43 : 2,051.54 = 546.48 : x
  2. Step 2: Convert to fraction form
    1,368.43/2,051.54 = 546.48/x
  3. Step 3: Cross multiply
    1,368.43x = 2,051.54 × 546.48
  4. Step 4: Simplify right side
    1,368.43x = 1,121,124.90
  5. Step 5: Solve for x
    x = 1,121,124.90/1,368.43
  6. Step 6: Final answer
    x = 819.28

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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.