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Finding the Fourth Proportional to 902.38, 1,245.61 and 529.67

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Solution

The fourth proportional to 902.38, 1,245.61 and 529.67 is: 731.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.38 : 1,245.61 = 529.67 : x
  2. Step 2: Convert to fraction form
    902.38/1,245.61 = 529.67/x
  3. Step 3: Cross multiply
    902.38x = 1,245.61 × 529.67
  4. Step 4: Simplify right side
    902.38x = 659,761.35
  5. Step 5: Solve for x
    x = 659,761.35/902.38
  6. Step 6: Final answer
    x = 731.14

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1.5x scale

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.