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Finding the Fourth Proportional to 846.86, 1,168.86 and 551.62

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Solution

The fourth proportional to 846.86, 1,168.86 and 551.62 is: 761.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.86 : 1,168.86 = 551.62 : x
  2. Step 2: Convert to fraction form
    846.86/1,168.86 = 551.62/x
  3. Step 3: Cross multiply
    846.86x = 1,168.86 × 551.62
  4. Step 4: Simplify right side
    846.86x = 644,766.55
  5. Step 5: Solve for x
    x = 644,766.55/846.86
  6. Step 6: Final answer
    x = 761.36

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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.