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Finding the Fourth Proportional to 1,051.08, 1,575.86 and 495.83

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Solution

The fourth proportional to 1,051.08, 1,575.86 and 495.83 is: 743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.08 : 1,575.86 = 495.83 : x
  2. Step 2: Convert to fraction form
    1,051.08/1,575.86 = 495.83/x
  3. Step 3: Cross multiply
    1,051.08x = 1,575.86 × 495.83
  4. Step 4: Simplify right side
    1,051.08x = 781,348.31
  5. Step 5: Solve for x
    x = 781,348.31/1,051.08
  6. Step 6: Final answer
    x = 743.38

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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.