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Finding the Fourth Proportional to 935.93, 1,291.31 and 604.55

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Solution

The fourth proportional to 935.93, 1,291.31 and 604.55 is: 834.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.93 : 1,291.31 = 604.55 : x
  2. Step 2: Convert to fraction form
    935.93/1,291.31 = 604.55/x
  3. Step 3: Cross multiply
    935.93x = 1,291.31 × 604.55
  4. Step 4: Simplify right side
    935.93x = 780,661.46
  5. Step 5: Solve for x
    x = 780,661.46/935.93
  6. Step 6: Final answer
    x = 834.10

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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.