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Finding the Fourth Proportional to 74.98, 112.55 and 32.26

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Solution

The fourth proportional to 74.98, 112.55 and 32.26 is: 48.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74.98 : 112.55 = 32.26 : x
  2. Step 2: Convert to fraction form
    74.98/112.55 = 32.26/x
  3. Step 3: Cross multiply
    74.98x = 112.55 × 32.26
  4. Step 4: Simplify right side
    74.98x = 3,630.86
  5. Step 5: Solve for x
    x = 3,630.86/74.98
  6. Step 6: Final answer
    x = 48.42

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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.