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Finding the Fourth Proportional to 313.79, 470.48 and 151.38

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Solution

The fourth proportional to 313.79, 470.48 and 151.38 is: 226.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.79 : 470.48 = 151.38 : x
  2. Step 2: Convert to fraction form
    313.79/470.48 = 151.38/x
  3. Step 3: Cross multiply
    313.79x = 470.48 × 151.38
  4. Step 4: Simplify right side
    313.79x = 71,220.51
  5. Step 5: Solve for x
    x = 71,220.51/313.79
  6. Step 6: Final answer
    x = 226.97

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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.