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Finding the Fourth Proportional to 374.33, 560.89 and 220.40

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Solution

The fourth proportional to 374.33, 560.89 and 220.40 is: 330.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.33 : 560.89 = 220.40 : x
  2. Step 2: Convert to fraction form
    374.33/560.89 = 220.40/x
  3. Step 3: Cross multiply
    374.33x = 560.89 × 220.40
  4. Step 4: Simplify right side
    374.33x = 123,619.73
  5. Step 5: Solve for x
    x = 123,619.73/374.33
  6. Step 6: Final answer
    x = 330.24

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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.