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Finding the Fourth Proportional to 475.35, 656.16 and 300.81

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Solution

The fourth proportional to 475.35, 656.16 and 300.81 is: 415.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.35 : 656.16 = 300.81 : x
  2. Step 2: Convert to fraction form
    475.35/656.16 = 300.81/x
  3. Step 3: Cross multiply
    475.35x = 656.16 × 300.81
  4. Step 4: Simplify right side
    475.35x = 197,379.49
  5. Step 5: Solve for x
    x = 197,379.49/475.35
  6. Step 6: Final answer
    x = 415.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.