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Finding the Fourth Proportional to 505.93, 697.98 and 401.03

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Solution

The fourth proportional to 505.93, 697.98 and 401.03 is: 553.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    505.93 : 697.98 = 401.03 : x
  2. Step 2: Convert to fraction form
    505.93/697.98 = 401.03/x
  3. Step 3: Cross multiply
    505.93x = 697.98 × 401.03
  4. Step 4: Simplify right side
    505.93x = 279,910.92
  5. Step 5: Solve for x
    x = 279,910.92/505.93
  6. Step 6: Final answer
    x = 553.26

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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.