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Finding the Fourth Proportional to 475.45, 656.13 and 265.61

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Solution

The fourth proportional to 475.45, 656.13 and 265.61 is: 366.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.45 : 656.13 = 265.61 : x
  2. Step 2: Convert to fraction form
    475.45/656.13 = 265.61/x
  3. Step 3: Cross multiply
    475.45x = 656.13 × 265.61
  4. Step 4: Simplify right side
    475.45x = 174,277.33
  5. Step 5: Solve for x
    x = 174,277.33/475.45
  6. Step 6: Final answer
    x = 366.55

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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.