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Finding the Fourth Proportional to 503.00, 751.59 and 399.20

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Solution

The fourth proportional to 503.00, 751.59 and 399.20 is: 596.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.00 : 751.59 = 399.20 : x
  2. Step 2: Convert to fraction form
    503.00/751.59 = 399.20/x
  3. Step 3: Cross multiply
    503.00x = 751.59 × 399.20
  4. Step 4: Simplify right side
    503.00x = 300,034.73
  5. Step 5: Solve for x
    x = 300,034.73/503.00
  6. Step 6: Final answer
    x = 596.50

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Similar ratio
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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.