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Finding the Fourth Proportional to 369.34, 555.96 and 261.88

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Solution

The fourth proportional to 369.34, 555.96 and 261.88 is: 394.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.34 : 555.96 = 261.88 : x
  2. Step 2: Convert to fraction form
    369.34/555.96 = 261.88/x
  3. Step 3: Cross multiply
    369.34x = 555.96 × 261.88
  4. Step 4: Simplify right side
    369.34x = 145,594.80
  5. Step 5: Solve for x
    x = 145,594.80/369.34
  6. Step 6: Final answer
    x = 394.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.