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Finding the Fourth Proportional to 313.81, 470.40 and 176.97

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Solution

The fourth proportional to 313.81, 470.40 and 176.97 is: 265.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.81 : 470.40 = 176.97 : x
  2. Step 2: Convert to fraction form
    313.81/470.40 = 176.97/x
  3. Step 3: Cross multiply
    313.81x = 470.40 × 176.97
  4. Step 4: Simplify right side
    313.81x = 83,246.69
  5. Step 5: Solve for x
    x = 83,246.69/313.81
  6. Step 6: Final answer
    x = 265.28

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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.