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Finding the Fourth Proportional to 935.54, 1,291.10 and 604.86

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Solution

The fourth proportional to 935.54, 1,291.10 and 604.86 is: 834.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.54 : 1,291.10 = 604.86 : x
  2. Step 2: Convert to fraction form
    935.54/1,291.10 = 604.86/x
  3. Step 3: Cross multiply
    935.54x = 1,291.10 × 604.86
  4. Step 4: Simplify right side
    935.54x = 780,934.75
  5. Step 5: Solve for x
    x = 780,934.75/935.54
  6. Step 6: Final answer
    x = 834.74

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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.