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Finding the Fourth Proportional to 620.54, 930.81 and 158.32

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Solution

The fourth proportional to 620.54, 930.81 and 158.32 is: 237.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.54 : 930.81 = 158.32 : x
  2. Step 2: Convert to fraction form
    620.54/930.81 = 158.32/x
  3. Step 3: Cross multiply
    620.54x = 930.81 × 158.32
  4. Step 4: Simplify right side
    620.54x = 147,366.71
  5. Step 5: Solve for x
    x = 147,366.71/620.54
  6. Step 6: Final answer
    x = 237.48

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Similar ratio
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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.