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Finding the Fourth Proportional to 958.63, 1,438.37 and 569.39

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Solution

The fourth proportional to 958.63, 1,438.37 and 569.39 is: 854.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.63 : 1,438.37 = 569.39 : x
  2. Step 2: Convert to fraction form
    958.63/1,438.37 = 569.39/x
  3. Step 3: Cross multiply
    958.63x = 1,438.37 × 569.39
  4. Step 4: Simplify right side
    958.63x = 818,998.51
  5. Step 5: Solve for x
    x = 818,998.51/958.63
  6. Step 6: Final answer
    x = 854.34

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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.