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Finding the Fourth Proportional to 645.89, 968.83 and 235.02

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Solution

The fourth proportional to 645.89, 968.83 and 235.02 is: 352.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.89 : 968.83 = 235.02 : x
  2. Step 2: Convert to fraction form
    645.89/968.83 = 235.02/x
  3. Step 3: Cross multiply
    645.89x = 968.83 × 235.02
  4. Step 4: Simplify right side
    645.89x = 227,694.43
  5. Step 5: Solve for x
    x = 227,694.43/645.89
  6. Step 6: Final answer
    x = 352.53

Related Problems

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Half scale
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Double scale
Find fourth proportional to 646.89, 970.33 and 236.02
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.