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Finding the Fourth Proportional to 942.16, 1,291.60 and 927.04

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Solution

The fourth proportional to 942.16, 1,291.60 and 927.04 is: 1,270.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.16 : 1,291.60 = 927.04 : x
  2. Step 2: Convert to fraction form
    942.16/1,291.60 = 927.04/x
  3. Step 3: Cross multiply
    942.16x = 1,291.60 × 927.04
  4. Step 4: Simplify right side
    942.16x = 1,197,364.86
  5. Step 5: Solve for x
    x = 1,197,364.86/942.16
  6. Step 6: Final answer
    x = 1,270.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.