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Finding the Fourth Proportional to 503.84, 690.77 and 494.60

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Solution

The fourth proportional to 503.84, 690.77 and 494.60 is: 678.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.84 : 690.77 = 494.60 : x
  2. Step 2: Convert to fraction form
    503.84/690.77 = 494.60/x
  3. Step 3: Cross multiply
    503.84x = 690.77 × 494.60
  4. Step 4: Simplify right side
    503.84x = 341,652.62
  5. Step 5: Solve for x
    x = 341,652.62/503.84
  6. Step 6: Final answer
    x = 678.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.