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Finding the Fourth Proportional to 1,135.89, 1,703.37 and 520.02

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Solution

The fourth proportional to 1,135.89, 1,703.37 and 520.02 is: 779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.89 : 1,703.37 = 520.02 : x
  2. Step 2: Convert to fraction form
    1,135.89/1,703.37 = 520.02/x
  3. Step 3: Cross multiply
    1,135.89x = 1,703.37 × 520.02
  4. Step 4: Simplify right side
    1,135.89x = 885,786.47
  5. Step 5: Solve for x
    x = 885,786.47/1,135.89
  6. Step 6: Final answer
    x = 779.82

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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.