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Finding the Fourth Proportional to 556, 835.80 and 515.92

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Solution

The fourth proportional to 556, 835.80 and 515.92 is: 775.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    556 : 835.80 = 515.92 : x
  2. Step 2: Convert to fraction form
    556/835.80 = 515.92/x
  3. Step 3: Cross multiply
    556x = 835.80 × 515.92
  4. Step 4: Simplify right side
    556x = 431,205.94
  5. Step 5: Solve for x
    x = 431,205.94/556
  6. Step 6: Final answer
    x = 775.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.