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Finding the Fourth Proportional to 629.17, 942.63 and 561.30

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Solution

The fourth proportional to 629.17, 942.63 and 561.30 is: 840.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    629.17 : 942.63 = 561.30 : x
  2. Step 2: Convert to fraction form
    629.17/942.63 = 561.30/x
  3. Step 3: Cross multiply
    629.17x = 942.63 × 561.30
  4. Step 4: Simplify right side
    629.17x = 529,098.22
  5. Step 5: Solve for x
    x = 529,098.22/629.17
  6. Step 6: Final answer
    x = 840.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.