Home / 1,119.34-1,679.10-297.60

Finding the Fourth Proportional to 1,119.34, 1,679.10 and 297.60

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Solution

The fourth proportional to 1,119.34, 1,679.10 and 297.60 is: 446.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.34 : 1,679.10 = 297.60 : x
  2. Step 2: Convert to fraction form
    1,119.34/1,679.10 = 297.60/x
  3. Step 3: Cross multiply
    1,119.34x = 1,679.10 × 297.60
  4. Step 4: Simplify right side
    1,119.34x = 499,700.16
  5. Step 5: Solve for x
    x = 499,700.16/1,119.34
  6. Step 6: Final answer
    x = 446.42

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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.