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Finding the Fourth Proportional to 620.77, 930.93 and 181.91

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Solution

The fourth proportional to 620.77, 930.93 and 181.91 is: 272.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.77 : 930.93 = 181.91 : x
  2. Step 2: Convert to fraction form
    620.77/930.93 = 181.91/x
  3. Step 3: Cross multiply
    620.77x = 930.93 × 181.91
  4. Step 4: Simplify right side
    620.77x = 169,348.67
  5. Step 5: Solve for x
    x = 169,348.67/620.77
  6. Step 6: Final answer
    x = 272.80

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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.