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Finding the Fourth Proportional to 651.27, 973.21 and 636.69

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Solution

The fourth proportional to 651.27, 973.21 and 636.69 is: 951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.27 : 973.21 = 636.69 : x
  2. Step 2: Convert to fraction form
    651.27/973.21 = 636.69/x
  3. Step 3: Cross multiply
    651.27x = 973.21 × 636.69
  4. Step 4: Simplify right side
    651.27x = 619,631.48
  5. Step 5: Solve for x
    x = 619,631.48/651.27
  6. Step 6: Final answer
    x = 951.42

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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.