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Finding the Fourth Proportional to 1,305.06, 1,958.34 and 525.42

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Solution

The fourth proportional to 1,305.06, 1,958.34 and 525.42 is: 788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305.06 : 1,958.34 = 525.42 : x
  2. Step 2: Convert to fraction form
    1,305.06/1,958.34 = 525.42/x
  3. Step 3: Cross multiply
    1,305.06x = 1,958.34 × 525.42
  4. Step 4: Simplify right side
    1,305.06x = 1,028,951.00
  5. Step 5: Solve for x
    x = 1,028,951.00/1,305.06
  6. Step 6: Final answer
    x = 788.43

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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.