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Finding the Fourth Proportional to 473.44, 709.90 and 254.32

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Solution

The fourth proportional to 473.44, 709.90 and 254.32 is: 381.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.44 : 709.90 = 254.32 : x
  2. Step 2: Convert to fraction form
    473.44/709.90 = 254.32/x
  3. Step 3: Cross multiply
    473.44x = 709.90 × 254.32
  4. Step 4: Simplify right side
    473.44x = 180,543.35
  5. Step 5: Solve for x
    x = 180,543.35/473.44
  6. Step 6: Final answer
    x = 381.35

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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.