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Finding the Fourth Proportional to 223.94, 337.90 and 215.50

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Solution

The fourth proportional to 223.94, 337.90 and 215.50 is: 325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.94 : 337.90 = 215.50 : x
  2. Step 2: Convert to fraction form
    223.94/337.90 = 215.50/x
  3. Step 3: Cross multiply
    223.94x = 337.90 × 215.50
  4. Step 4: Simplify right side
    223.94x = 72,815.76
  5. Step 5: Solve for x
    x = 72,815.76/223.94
  6. Step 6: Final answer
    x = 325.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.