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Finding the Fourth Proportional to 380.54, 570.80 and 294.00

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Solution

The fourth proportional to 380.54, 570.80 and 294.00 is: 440.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.54 : 570.80 = 294.00 : x
  2. Step 2: Convert to fraction form
    380.54/570.80 = 294.00/x
  3. Step 3: Cross multiply
    380.54x = 570.80 × 294.00
  4. Step 4: Simplify right side
    380.54x = 167,813.79
  5. Step 5: Solve for x
    x = 167,813.79/380.54
  6. Step 6: Final answer
    x = 440.99

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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.