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Finding the Fourth Proportional to 1,611.72, 2,223.66 and 948.81

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Solution

The fourth proportional to 1,611.72, 2,223.66 and 948.81 is: 1,309.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.72 : 2,223.66 = 948.81 : x
  2. Step 2: Convert to fraction form
    1,611.72/2,223.66 = 948.81/x
  3. Step 3: Cross multiply
    1,611.72x = 2,223.66 × 948.81
  4. Step 4: Simplify right side
    1,611.72x = 2,109,830.84
  5. Step 5: Solve for x
    x = 2,109,830.84/1,611.72
  6. Step 6: Final answer
    x = 1,309.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.