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Finding the Fourth Proportional to 373.44, 559.23 and 257.56

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Solution

The fourth proportional to 373.44, 559.23 and 257.56 is: 385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.44 : 559.23 = 257.56 : x
  2. Step 2: Convert to fraction form
    373.44/559.23 = 257.56/x
  3. Step 3: Cross multiply
    373.44x = 559.23 × 257.56
  4. Step 4: Simplify right side
    373.44x = 144,035.28
  5. Step 5: Solve for x
    x = 144,035.28/373.44
  6. Step 6: Final answer
    x = 385.70

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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.