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Finding the Fourth Proportional to 577, 796.50 and 400.84

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Solution

The fourth proportional to 577, 796.50 and 400.84 is: 553.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    577 : 796.50 = 400.84 : x
  2. Step 2: Convert to fraction form
    577/796.50 = 400.84/x
  3. Step 3: Cross multiply
    577x = 796.50 × 400.84
  4. Step 4: Simplify right side
    577x = 319,269.06
  5. Step 5: Solve for x
    x = 319,269.06/577
  6. Step 6: Final answer
    x = 553.33

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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.