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Finding the Fourth Proportional to 373.70, 559.55 and 300.21

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Solution

The fourth proportional to 373.70, 559.55 and 300.21 is: 449.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.70 : 559.55 = 300.21 : x
  2. Step 2: Convert to fraction form
    373.70/559.55 = 300.21/x
  3. Step 3: Cross multiply
    373.70x = 559.55 × 300.21
  4. Step 4: Simplify right side
    373.70x = 167,981.00
  5. Step 5: Solve for x
    x = 167,981.00/373.70
  6. Step 6: Final answer
    x = 449.51

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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.