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Finding the Fourth Proportional to 415.88, 573.95 and 303.89

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Solution

The fourth proportional to 415.88, 573.95 and 303.89 is: 419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.88 : 573.95 = 303.89 : x
  2. Step 2: Convert to fraction form
    415.88/573.95 = 303.89/x
  3. Step 3: Cross multiply
    415.88x = 573.95 × 303.89
  4. Step 4: Simplify right side
    415.88x = 174,413.28
  5. Step 5: Solve for x
    x = 174,413.28/415.88
  6. Step 6: Final answer
    x = 419.39

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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.