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Finding the Fourth Proportional to 628.01, 941.37 and 303.20

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Solution

The fourth proportional to 628.01, 941.37 and 303.20 is: 454.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.01 : 941.37 = 303.20 : x
  2. Step 2: Convert to fraction form
    628.01/941.37 = 303.20/x
  3. Step 3: Cross multiply
    628.01x = 941.37 × 303.20
  4. Step 4: Simplify right side
    628.01x = 285,423.38
  5. Step 5: Solve for x
    x = 285,423.38/628.01
  6. Step 6: Final answer
    x = 454.49

Related Problems

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Double scale
Find fourth proportional to 629.01, 942.87 and 304.20
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.