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Finding the Fourth Proportional to 784.46, 1,176.53 and 236.49

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Solution

The fourth proportional to 784.46, 1,176.53 and 236.49 is: 354.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    784.46 : 1,176.53 = 236.49 : x
  2. Step 2: Convert to fraction form
    784.46/1,176.53 = 236.49/x
  3. Step 3: Cross multiply
    784.46x = 1,176.53 × 236.49
  4. Step 4: Simplify right side
    784.46x = 278,236.40
  5. Step 5: Solve for x
    x = 278,236.40/784.46
  6. Step 6: Final answer
    x = 354.69

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Double scale
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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.