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Finding the Fourth Proportional to 955.93, 1,319.43 and 624.37

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Solution

The fourth proportional to 955.93, 1,319.43 and 624.37 is: 861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.93 : 1,319.43 = 624.37 : x
  2. Step 2: Convert to fraction form
    955.93/1,319.43 = 624.37/x
  3. Step 3: Cross multiply
    955.93x = 1,319.43 × 624.37
  4. Step 4: Simplify right side
    955.93x = 823,812.51
  5. Step 5: Solve for x
    x = 823,812.51/955.93
  6. Step 6: Final answer
    x = 861.79

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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.