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Finding the Fourth Proportional to 507.22, 699.96 and 274.35

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Solution

The fourth proportional to 507.22, 699.96 and 274.35 is: 378.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.22 : 699.96 = 274.35 : x
  2. Step 2: Convert to fraction form
    507.22/699.96 = 274.35/x
  3. Step 3: Cross multiply
    507.22x = 699.96 × 274.35
  4. Step 4: Simplify right side
    507.22x = 192,031.21
  5. Step 5: Solve for x
    x = 192,031.21/507.22
  6. Step 6: Final answer
    x = 378.60

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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.