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Finding the Fourth Proportional to 613.73, 847.08 and 551.45

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Solution

The fourth proportional to 613.73, 847.08 and 551.45 is: 761.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.73 : 847.08 = 551.45 : x
  2. Step 2: Convert to fraction form
    613.73/847.08 = 551.45/x
  3. Step 3: Cross multiply
    613.73x = 847.08 × 551.45
  4. Step 4: Simplify right side
    613.73x = 467,118.03
  5. Step 5: Solve for x
    x = 467,118.03/613.73
  6. Step 6: Final answer
    x = 761.12

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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.