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Finding the Fourth Proportional to 949, 1,430.83 and 758.92

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Solution

The fourth proportional to 949, 1,430.83 and 758.92 is: 1,144.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    949 : 1,430.83 = 758.92 : x
  2. Step 2: Convert to fraction form
    949/1,430.83 = 758.92/x
  3. Step 3: Cross multiply
    949x = 1,430.83 × 758.92
  4. Step 4: Simplify right side
    949x = 1,085,885.50
  5. Step 5: Solve for x
    x = 1,085,885.50/949
  6. Step 6: Final answer
    x = 1,144.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.