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Finding the Fourth Proportional to 1,705.37, 2,555.87 and 730.49

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Solution

The fourth proportional to 1,705.37, 2,555.87 and 730.49 is: 1,094.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.37 : 2,555.87 = 730.49 : x
  2. Step 2: Convert to fraction form
    1,705.37/2,555.87 = 730.49/x
  3. Step 3: Cross multiply
    1,705.37x = 2,555.87 × 730.49
  4. Step 4: Simplify right side
    1,705.37x = 1,867,021.04
  5. Step 5: Solve for x
    x = 1,867,021.04/1,705.37
  6. Step 6: Final answer
    x = 1,094.79

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1.5x scale

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.