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Finding the Fourth Proportional to 620.33, 931.37 and 415.26

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Solution

The fourth proportional to 620.33, 931.37 and 415.26 is: 623.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.33 : 931.37 = 415.26 : x
  2. Step 2: Convert to fraction form
    620.33/931.37 = 415.26/x
  3. Step 3: Cross multiply
    620.33x = 931.37 × 415.26
  4. Step 4: Simplify right side
    620.33x = 386,758.63
  5. Step 5: Solve for x
    x = 386,758.63/620.33
  6. Step 6: Final answer
    x = 623.48

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Double scale
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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.