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Finding the Fourth Proportional to 313.86, 469.88 and 176.26

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Solution

The fourth proportional to 313.86, 469.88 and 176.26 is: 263.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.86 : 469.88 = 176.26 : x
  2. Step 2: Convert to fraction form
    313.86/469.88 = 176.26/x
  3. Step 3: Cross multiply
    313.86x = 469.88 × 176.26
  4. Step 4: Simplify right side
    313.86x = 82,821.05
  5. Step 5: Solve for x
    x = 82,821.05/313.86
  6. Step 6: Final answer
    x = 263.88

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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.