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Finding the Fourth Proportional to 561.37, 848.41 and 551.78

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Solution

The fourth proportional to 561.37, 848.41 and 551.78 is: 833.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    561.37 : 848.41 = 551.78 : x
  2. Step 2: Convert to fraction form
    561.37/848.41 = 551.78/x
  3. Step 3: Cross multiply
    561.37x = 848.41 × 551.78
  4. Step 4: Simplify right side
    561.37x = 468,135.67
  5. Step 5: Solve for x
    x = 468,135.67/561.37
  6. Step 6: Final answer
    x = 833.92

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.