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Finding the Fourth Proportional to 737.91, 1,019.39 and 608.31

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Solution

The fourth proportional to 737.91, 1,019.39 and 608.31 is: 840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    737.91 : 1,019.39 = 608.31 : x
  2. Step 2: Convert to fraction form
    737.91/1,019.39 = 608.31/x
  3. Step 3: Cross multiply
    737.91x = 1,019.39 × 608.31
  4. Step 4: Simplify right side
    737.91x = 620,102.09
  5. Step 5: Solve for x
    x = 620,102.09/737.91
  6. Step 6: Final answer
    x = 840.35

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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.