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Finding the Fourth Proportional to 629.58, 948.17 and 561.72

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Solution

The fourth proportional to 629.58, 948.17 and 561.72 is: 845.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.58 : 948.17 = 561.72 : x
  2. Step 2: Convert to fraction form
    629.58/948.17 = 561.72/x
  3. Step 3: Cross multiply
    629.58x = 948.17 × 561.72
  4. Step 4: Simplify right side
    629.58x = 532,606.05
  5. Step 5: Solve for x
    x = 532,606.05/629.58
  6. Step 6: Final answer
    x = 845.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.