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Finding the Fourth Proportional to 72.30, 108.58 and 44.98

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Solution

The fourth proportional to 72.30, 108.58 and 44.98 is: 67.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72.30 : 108.58 = 44.98 : x
  2. Step 2: Convert to fraction form
    72.30/108.58 = 44.98/x
  3. Step 3: Cross multiply
    72.30x = 108.58 × 44.98
  4. Step 4: Simplify right side
    72.30x = 4,883.93
  5. Step 5: Solve for x
    x = 4,883.93/72.30
  6. Step 6: Final answer
    x = 67.55

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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.