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Finding the Fourth Proportional to 637.64, 955.64 and 308.38

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Solution

The fourth proportional to 637.64, 955.64 and 308.38 is: 462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.64 : 955.64 = 308.38 : x
  2. Step 2: Convert to fraction form
    637.64/955.64 = 308.38/x
  3. Step 3: Cross multiply
    637.64x = 955.64 × 308.38
  4. Step 4: Simplify right side
    637.64x = 294,700.26
  5. Step 5: Solve for x
    x = 294,700.26/637.64
  6. Step 6: Final answer
    x = 462.17

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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.