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Finding the Fourth Proportional to 1,151.76, 1,588.32 and 1,066.92

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Solution

The fourth proportional to 1,151.76, 1,588.32 and 1,066.92 is: 1,471.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.76 : 1,588.32 = 1,066.92 : x
  2. Step 2: Convert to fraction form
    1,151.76/1,588.32 = 1,066.92/x
  3. Step 3: Cross multiply
    1,151.76x = 1,588.32 × 1,066.92
  4. Step 4: Simplify right side
    1,151.76x = 1,694,610.37
  5. Step 5: Solve for x
    x = 1,694,610.37/1,151.76
  6. Step 6: Final answer
    x = 1,471.32

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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.