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Finding the Fourth Proportional to 848.98, 1,272.84 and 629.74

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Solution

The fourth proportional to 848.98, 1,272.84 and 629.74 is: 944.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    848.98 : 1,272.84 = 629.74 : x
  2. Step 2: Convert to fraction form
    848.98/1,272.84 = 629.74/x
  3. Step 3: Cross multiply
    848.98x = 1,272.84 × 629.74
  4. Step 4: Simplify right side
    848.98x = 801,558.26
  5. Step 5: Solve for x
    x = 801,558.26/848.98
  6. Step 6: Final answer
    x = 944.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.