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Finding the Fourth Proportional to 620.50, 930.63 and 181.65

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Solution

The fourth proportional to 620.50, 930.63 and 181.65 is: 272.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.50 : 930.63 = 181.65 : x
  2. Step 2: Convert to fraction form
    620.50/930.63 = 181.65/x
  3. Step 3: Cross multiply
    620.50x = 930.63 × 181.65
  4. Step 4: Simplify right side
    620.50x = 169,053.11
  5. Step 5: Solve for x
    x = 169,053.11/620.50
  6. Step 6: Final answer
    x = 272.45

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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.