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Finding the Fourth Proportional to 879.34, 1,318.58 and 294.14

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Solution

The fourth proportional to 879.34, 1,318.58 and 294.14 is: 441.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    879.34 : 1,318.58 = 294.14 : x
  2. Step 2: Convert to fraction form
    879.34/1,318.58 = 294.14/x
  3. Step 3: Cross multiply
    879.34x = 1,318.58 × 294.14
  4. Step 4: Simplify right side
    879.34x = 387,845.65
  5. Step 5: Solve for x
    x = 387,845.65/879.34
  6. Step 6: Final answer
    x = 441.06

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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.