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Finding the Fourth Proportional to 935.46, 1,290.06 and 739.44

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Solution

The fourth proportional to 935.46, 1,290.06 and 739.44 is: 1,019.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.46 : 1,290.06 = 739.44 : x
  2. Step 2: Convert to fraction form
    935.46/1,290.06 = 739.44/x
  3. Step 3: Cross multiply
    935.46x = 1,290.06 × 739.44
  4. Step 4: Simplify right side
    935.46x = 953,921.97
  5. Step 5: Solve for x
    x = 953,921.97/935.46
  6. Step 6: Final answer
    x = 1,019.74

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1.5x scale

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.