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Finding the Fourth Proportional to 1,119.09, 1,678.44 and 297.37

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Solution

The fourth proportional to 1,119.09, 1,678.44 and 297.37 is: 446.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.09 : 1,678.44 = 297.37 : x
  2. Step 2: Convert to fraction form
    1,119.09/1,678.44 = 297.37/x
  3. Step 3: Cross multiply
    1,119.09x = 1,678.44 × 297.37
  4. Step 4: Simplify right side
    1,119.09x = 499,117.70
  5. Step 5: Solve for x
    x = 499,117.70/1,119.09
  6. Step 6: Final answer
    x = 446.00

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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.