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Finding the Fourth Proportional to 942.26, 1,300.66 and 627.98

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Solution

The fourth proportional to 942.26, 1,300.66 and 627.98 is: 866.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    942.26 : 1,300.66 = 627.98 : x
  2. Step 2: Convert to fraction form
    942.26/1,300.66 = 627.98/x
  3. Step 3: Cross multiply
    942.26x = 1,300.66 × 627.98
  4. Step 4: Simplify right side
    942.26x = 816,780.39
  5. Step 5: Solve for x
    x = 816,780.39/942.26
  6. Step 6: Final answer
    x = 866.84

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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.