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Finding the Fourth Proportional to 475.81, 713.85 and 187.45

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Solution

The fourth proportional to 475.81, 713.85 and 187.45 is: 281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.81 : 713.85 = 187.45 : x
  2. Step 2: Convert to fraction form
    475.81/713.85 = 187.45/x
  3. Step 3: Cross multiply
    475.81x = 713.85 × 187.45
  4. Step 4: Simplify right side
    475.81x = 133,808.69
  5. Step 5: Solve for x
    x = 133,808.69/475.81
  6. Step 6: Final answer
    x = 281.22

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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.