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Finding the Fourth Proportional to 215.08, 295.72 and 191.54

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Solution

The fourth proportional to 215.08, 295.72 and 191.54 is: 263.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.08 : 295.72 = 191.54 : x
  2. Step 2: Convert to fraction form
    215.08/295.72 = 191.54/x
  3. Step 3: Cross multiply
    215.08x = 295.72 × 191.54
  4. Step 4: Simplify right side
    215.08x = 56,642.21
  5. Step 5: Solve for x
    x = 56,642.21/215.08
  6. Step 6: Final answer
    x = 263.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.