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Finding the Fourth Proportional to 620.35, 926.01 and 551.70

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Solution

The fourth proportional to 620.35, 926.01 and 551.70 is: 823.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.35 : 926.01 = 551.70 : x
  2. Step 2: Convert to fraction form
    620.35/926.01 = 551.70/x
  3. Step 3: Cross multiply
    620.35x = 926.01 × 551.70
  4. Step 4: Simplify right side
    620.35x = 510,879.72
  5. Step 5: Solve for x
    x = 510,879.72/620.35
  6. Step 6: Final answer
    x = 823.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.