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Finding the Fourth Proportional to 503.10, 694.18 and 282.01

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Solution

The fourth proportional to 503.10, 694.18 and 282.01 is: 389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    503.10 : 694.18 = 282.01 : x
  2. Step 2: Convert to fraction form
    503.10/694.18 = 282.01/x
  3. Step 3: Cross multiply
    503.10x = 694.18 × 282.01
  4. Step 4: Simplify right side
    503.10x = 195,765.70
  5. Step 5: Solve for x
    x = 195,765.70/503.10
  6. Step 6: Final answer
    x = 389.12

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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.