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Finding the Fourth Proportional to 313.24, 469.86 and 185.28

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Solution

The fourth proportional to 313.24, 469.86 and 185.28 is: 277.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.24 : 469.86 = 185.28 : x
  2. Step 2: Convert to fraction form
    313.24/469.86 = 185.28/x
  3. Step 3: Cross multiply
    313.24x = 469.86 × 185.28
  4. Step 4: Simplify right side
    313.24x = 87,055.66
  5. Step 5: Solve for x
    x = 87,055.66/313.24
  6. Step 6: Final answer
    x = 277.92

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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.