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Finding the Fourth Proportional to 1,800.12, 2,699.15 and 703.23

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Solution

The fourth proportional to 1,800.12, 2,699.15 and 703.23 is: 1,054.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.12 : 2,699.15 = 703.23 : x
  2. Step 2: Convert to fraction form
    1,800.12/2,699.15 = 703.23/x
  3. Step 3: Cross multiply
    1,800.12x = 2,699.15 × 703.23
  4. Step 4: Simplify right side
    1,800.12x = 1,898,119.74
  5. Step 5: Solve for x
    x = 1,898,119.74/1,800.12
  6. Step 6: Final answer
    x = 1,054.44

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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.