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Finding the Fourth Proportional to 347.85, 480.03 and 228.15

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Solution

The fourth proportional to 347.85, 480.03 and 228.15 is: 314.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.85 : 480.03 = 228.15 : x
  2. Step 2: Convert to fraction form
    347.85/480.03 = 228.15/x
  3. Step 3: Cross multiply
    347.85x = 480.03 × 228.15
  4. Step 4: Simplify right side
    347.85x = 109,518.84
  5. Step 5: Solve for x
    x = 109,518.84/347.85
  6. Step 6: Final answer
    x = 314.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.