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Finding the Fourth Proportional to 525.18, 788.16 and 268.86

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Solution

The fourth proportional to 525.18, 788.16 and 268.86 is: 403.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.18 : 788.16 = 268.86 : x
  2. Step 2: Convert to fraction form
    525.18/788.16 = 268.86/x
  3. Step 3: Cross multiply
    525.18x = 788.16 × 268.86
  4. Step 4: Simplify right side
    525.18x = 211,904.70
  5. Step 5: Solve for x
    x = 211,904.70/525.18
  6. Step 6: Final answer
    x = 403.49

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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.