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Finding the Fourth Proportional to 613.37, 920.19 and 202.51

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Solution

The fourth proportional to 613.37, 920.19 and 202.51 is: 303.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.37 : 920.19 = 202.51 : x
  2. Step 2: Convert to fraction form
    613.37/920.19 = 202.51/x
  3. Step 3: Cross multiply
    613.37x = 920.19 × 202.51
  4. Step 4: Simplify right side
    613.37x = 186,347.68
  5. Step 5: Solve for x
    x = 186,347.68/613.37
  6. Step 6: Final answer
    x = 303.81

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Half scale
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Double scale
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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.