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Finding the Fourth Proportional to 620.08, 930.26 and 203.63

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Solution

The fourth proportional to 620.08, 930.26 and 203.63 is: 305.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.08 : 930.26 = 203.63 : x
  2. Step 2: Convert to fraction form
    620.08/930.26 = 203.63/x
  3. Step 3: Cross multiply
    620.08x = 930.26 × 203.63
  4. Step 4: Simplify right side
    620.08x = 189,428.84
  5. Step 5: Solve for x
    x = 189,428.84/620.08
  6. Step 6: Final answer
    x = 305.49

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1.5x scale

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.