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Finding the Fourth Proportional to 637.66, 955.88 and 291.22

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Solution

The fourth proportional to 637.66, 955.88 and 291.22 is: 436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.66 : 955.88 = 291.22 : x
  2. Step 2: Convert to fraction form
    637.66/955.88 = 291.22/x
  3. Step 3: Cross multiply
    637.66x = 955.88 × 291.22
  4. Step 4: Simplify right side
    637.66x = 278,371.37
  5. Step 5: Solve for x
    x = 278,371.37/637.66
  6. Step 6: Final answer
    x = 436.55

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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.