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Finding the Fourth Proportional to 373.91, 561.31 and 297.77

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Solution

The fourth proportional to 373.91, 561.31 and 297.77 is: 447.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.91 : 561.31 = 297.77 : x
  2. Step 2: Convert to fraction form
    373.91/561.31 = 297.77/x
  3. Step 3: Cross multiply
    373.91x = 561.31 × 297.77
  4. Step 4: Simplify right side
    373.91x = 167,137.73
  5. Step 5: Solve for x
    x = 167,137.73/373.91
  6. Step 6: Final answer
    x = 447.01

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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.