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Finding the Fourth Proportional to 637.95, 955.55 and 308.39

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Solution

The fourth proportional to 637.95, 955.55 and 308.39 is: 461.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.95 : 955.55 = 308.39 : x
  2. Step 2: Convert to fraction form
    637.95/955.55 = 308.39/x
  3. Step 3: Cross multiply
    637.95x = 955.55 × 308.39
  4. Step 4: Simplify right side
    637.95x = 294,675.74
  5. Step 5: Solve for x
    x = 294,675.74/637.95
  6. Step 6: Final answer
    x = 461.91

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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.