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Finding the Fourth Proportional to 1,062.72, 1,466.04 and 669.12

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Solution

The fourth proportional to 1,062.72, 1,466.04 and 669.12 is: 923.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,062.72 : 1,466.04 = 669.12 : x
  2. Step 2: Convert to fraction form
    1,062.72/1,466.04 = 669.12/x
  3. Step 3: Cross multiply
    1,062.72x = 1,466.04 × 669.12
  4. Step 4: Simplify right side
    1,062.72x = 980,956.68
  5. Step 5: Solve for x
    x = 980,956.68/1,062.72
  6. Step 6: Final answer
    x = 923.06

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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.