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Finding the Fourth Proportional to 794.47, 1,191.47 and 307.41

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Solution

The fourth proportional to 794.47, 1,191.47 and 307.41 is: 461.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    794.47 : 1,191.47 = 307.41 : x
  2. Step 2: Convert to fraction form
    794.47/1,191.47 = 307.41/x
  3. Step 3: Cross multiply
    794.47x = 1,191.47 × 307.41
  4. Step 4: Simplify right side
    794.47x = 366,269.79
  5. Step 5: Solve for x
    x = 366,269.79/794.47
  6. Step 6: Final answer
    x = 461.02

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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.