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Finding the Fourth Proportional to 1,155.82, 1,734.31 and 570.80

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Solution

The fourth proportional to 1,155.82, 1,734.31 and 570.80 is: 856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155.82 : 1,734.31 = 570.80 : x
  2. Step 2: Convert to fraction form
    1,155.82/1,734.31 = 570.80/x
  3. Step 3: Cross multiply
    1,155.82x = 1,734.31 × 570.80
  4. Step 4: Simplify right side
    1,155.82x = 989,939.44
  5. Step 5: Solve for x
    x = 989,939.44/1,155.82
  6. Step 6: Final answer
    x = 856.48

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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.