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Finding the Fourth Proportional to 507.74, 700.87 and 396.77

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Solution

The fourth proportional to 507.74, 700.87 and 396.77 is: 547.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.74 : 700.87 = 396.77 : x
  2. Step 2: Convert to fraction form
    507.74/700.87 = 396.77/x
  3. Step 3: Cross multiply
    507.74x = 700.87 × 396.77
  4. Step 4: Simplify right side
    507.74x = 278,084.19
  5. Step 5: Solve for x
    x = 278,084.19/507.74
  6. Step 6: Final answer
    x = 547.69

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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.