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Finding the Fourth Proportional to 503.38, 751.46 and 486.28

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Solution

The fourth proportional to 503.38, 751.46 and 486.28 is: 725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.38 : 751.46 = 486.28 : x
  2. Step 2: Convert to fraction form
    503.38/751.46 = 486.28/x
  3. Step 3: Cross multiply
    503.38x = 751.46 × 486.28
  4. Step 4: Simplify right side
    503.38x = 365,419.97
  5. Step 5: Solve for x
    x = 365,419.97/503.38
  6. Step 6: Final answer
    x = 725.93

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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.