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Finding the Fourth Proportional to 456.21, 684.72 and 294.08

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Solution

The fourth proportional to 456.21, 684.72 and 294.08 is: 441.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.21 : 684.72 = 294.08 : x
  2. Step 2: Convert to fraction form
    456.21/684.72 = 294.08/x
  3. Step 3: Cross multiply
    456.21x = 684.72 × 294.08
  4. Step 4: Simplify right side
    456.21x = 201,359.03
  5. Step 5: Solve for x
    x = 201,359.03/456.21
  6. Step 6: Final answer
    x = 441.37

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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.