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Finding the Fourth Proportional to 902.68, 1,245.29 and 529.67

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Solution

The fourth proportional to 902.68, 1,245.29 and 529.67 is: 730.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.68 : 1,245.29 = 529.67 : x
  2. Step 2: Convert to fraction form
    902.68/1,245.29 = 529.67/x
  3. Step 3: Cross multiply
    902.68x = 1,245.29 × 529.67
  4. Step 4: Simplify right side
    902.68x = 659,593.22
  5. Step 5: Solve for x
    x = 659,593.22/902.68
  6. Step 6: Final answer
    x = 730.71

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.