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Finding the Fourth Proportional to 645.56, 968.28 and 336.50

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Solution

The fourth proportional to 645.56, 968.28 and 336.50 is: 504.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.56 : 968.28 = 336.50 : x
  2. Step 2: Convert to fraction form
    645.56/968.28 = 336.50/x
  3. Step 3: Cross multiply
    645.56x = 968.28 × 336.50
  4. Step 4: Simplify right side
    645.56x = 325,826.22
  5. Step 5: Solve for x
    x = 325,826.22/645.56
  6. Step 6: Final answer
    x = 504.72

Related Problems

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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.