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Finding the Fourth Proportional to 525.35, 788.03 and 281.54

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Solution

The fourth proportional to 525.35, 788.03 and 281.54 is: 422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.35 : 788.03 = 281.54 : x
  2. Step 2: Convert to fraction form
    525.35/788.03 = 281.54/x
  3. Step 3: Cross multiply
    525.35x = 788.03 × 281.54
  4. Step 4: Simplify right side
    525.35x = 221,863.58
  5. Step 5: Solve for x
    x = 221,863.58/525.35
  6. Step 6: Final answer
    x = 422.31

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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.