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Finding the Fourth Proportional to 636.72, 948.69 and 608.76

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Solution

The fourth proportional to 636.72, 948.69 and 608.76 is: 907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.72 : 948.69 = 608.76 : x
  2. Step 2: Convert to fraction form
    636.72/948.69 = 608.76/x
  3. Step 3: Cross multiply
    636.72x = 948.69 × 608.76
  4. Step 4: Simplify right side
    636.72x = 577,524.52
  5. Step 5: Solve for x
    x = 577,524.52/636.72
  6. Step 6: Final answer
    x = 907.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.