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Finding the Fourth Proportional to 628.02, 942.06 and 303.66

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Solution

The fourth proportional to 628.02, 942.06 and 303.66 is: 455.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.02 : 942.06 = 303.66 : x
  2. Step 2: Convert to fraction form
    628.02/942.06 = 303.66/x
  3. Step 3: Cross multiply
    628.02x = 942.06 × 303.66
  4. Step 4: Simplify right side
    628.02x = 286,065.94
  5. Step 5: Solve for x
    x = 286,065.94/628.02
  6. Step 6: Final answer
    x = 455.50

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Double scale
Find fourth proportional to 629.02, 943.56 and 304.66
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.