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Finding the Fourth Proportional to 507.30, 700.07 and 274.42

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Solution

The fourth proportional to 507.30, 700.07 and 274.42 is: 378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.30 : 700.07 = 274.42 : x
  2. Step 2: Convert to fraction form
    507.30/700.07 = 274.42/x
  3. Step 3: Cross multiply
    507.30x = 700.07 × 274.42
  4. Step 4: Simplify right side
    507.30x = 192,115.30
  5. Step 5: Solve for x
    x = 192,115.30/507.30
  6. Step 6: Final answer
    x = 378.70

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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.