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Finding the Fourth Proportional to 291.00, 436.35 and 105.89

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Solution

The fourth proportional to 291.00, 436.35 and 105.89 is: 158.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.00 : 436.35 = 105.89 : x
  2. Step 2: Convert to fraction form
    291.00/436.35 = 105.89/x
  3. Step 3: Cross multiply
    291.00x = 436.35 × 105.89
  4. Step 4: Simplify right side
    291.00x = 46,206.59
  5. Step 5: Solve for x
    x = 46,206.59/291.00
  6. Step 6: Final answer
    x = 158.79

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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.