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Finding the Fourth Proportional to 936.40, 1,404.96 and 525.52

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Solution

The fourth proportional to 936.40, 1,404.96 and 525.52 is: 788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.40 : 1,404.96 = 525.52 : x
  2. Step 2: Convert to fraction form
    936.40/1,404.96 = 525.52/x
  3. Step 3: Cross multiply
    936.40x = 1,404.96 × 525.52
  4. Step 4: Simplify right side
    936.40x = 738,334.58
  5. Step 5: Solve for x
    x = 738,334.58/936.40
  6. Step 6: Final answer
    x = 788.48

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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.