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Finding the Fourth Proportional to 525.84, 790.36 and 513.52

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Solution

The fourth proportional to 525.84, 790.36 and 513.52 is: 771.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.84 : 790.36 = 513.52 : x
  2. Step 2: Convert to fraction form
    525.84/790.36 = 513.52/x
  3. Step 3: Cross multiply
    525.84x = 790.36 × 513.52
  4. Step 4: Simplify right side
    525.84x = 405,865.67
  5. Step 5: Solve for x
    x = 405,865.67/525.84
  6. Step 6: Final answer
    x = 771.84

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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.