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Finding the Fourth Proportional to 105.91, 159.01 and 60.35

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Solution

The fourth proportional to 105.91, 159.01 and 60.35 is: 90.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.91 : 159.01 = 60.35 : x
  2. Step 2: Convert to fraction form
    105.91/159.01 = 60.35/x
  3. Step 3: Cross multiply
    105.91x = 159.01 × 60.35
  4. Step 4: Simplify right side
    105.91x = 9,595.65
  5. Step 5: Solve for x
    x = 9,595.65/105.91
  6. Step 6: Final answer
    x = 90.60

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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.