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Finding the Fourth Proportional to 507.80, 700.76 and 274.92

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Solution

The fourth proportional to 507.80, 700.76 and 274.92 is: 379.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.80 : 700.76 = 274.92 : x
  2. Step 2: Convert to fraction form
    507.80/700.76 = 274.92/x
  3. Step 3: Cross multiply
    507.80x = 700.76 × 274.92
  4. Step 4: Simplify right side
    507.80x = 192,654.17
  5. Step 5: Solve for x
    x = 192,654.17/507.80
  6. Step 6: Final answer
    x = 379.39

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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.