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Finding the Fourth Proportional to 935.64, 1,290.90 and 604.44

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Solution

The fourth proportional to 935.64, 1,290.90 and 604.44 is: 833.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.64 : 1,290.90 = 604.44 : x
  2. Step 2: Convert to fraction form
    935.64/1,290.90 = 604.44/x
  3. Step 3: Cross multiply
    935.64x = 1,290.90 × 604.44
  4. Step 4: Simplify right side
    935.64x = 780,271.60
  5. Step 5: Solve for x
    x = 780,271.60/935.64
  6. Step 6: Final answer
    x = 833.94

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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.