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Finding the Fourth Proportional to 337.78, 505.88 and 215.67

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Solution

The fourth proportional to 337.78, 505.88 and 215.67 is: 323.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.78 : 505.88 = 215.67 : x
  2. Step 2: Convert to fraction form
    337.78/505.88 = 215.67/x
  3. Step 3: Cross multiply
    337.78x = 505.88 × 215.67
  4. Step 4: Simplify right side
    337.78x = 109,102.06
  5. Step 5: Solve for x
    x = 109,102.06/337.78
  6. Step 6: Final answer
    x = 323.00

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.