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Finding the Fourth Proportional to 503.30, 754.76 and 210.80

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Solution

The fourth proportional to 503.30, 754.76 and 210.80 is: 316.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.30 : 754.76 = 210.80 : x
  2. Step 2: Convert to fraction form
    503.30/754.76 = 210.80/x
  3. Step 3: Cross multiply
    503.30x = 754.76 × 210.80
  4. Step 4: Simplify right side
    503.30x = 159,103.41
  5. Step 5: Solve for x
    x = 159,103.41/503.30
  6. Step 6: Final answer
    x = 316.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.