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Finding the Fourth Proportional to 942.33, 1,299.07 and 718.27

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Solution

The fourth proportional to 942.33, 1,299.07 and 718.27 is: 990.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.33 : 1,299.07 = 718.27 : x
  2. Step 2: Convert to fraction form
    942.33/1,299.07 = 718.27/x
  3. Step 3: Cross multiply
    942.33x = 1,299.07 × 718.27
  4. Step 4: Simplify right side
    942.33x = 933,080.66
  5. Step 5: Solve for x
    x = 933,080.66/942.33
  6. Step 6: Final answer
    x = 990.18

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Why These Related Problems?

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