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Finding the Fourth Proportional to 525.40, 788.25 and 160.20

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Solution

The fourth proportional to 525.40, 788.25 and 160.20 is: 240.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.40 : 788.25 = 160.20 : x
  2. Step 2: Convert to fraction form
    525.40/788.25 = 160.20/x
  3. Step 3: Cross multiply
    525.40x = 788.25 × 160.20
  4. Step 4: Simplify right side
    525.40x = 126,277.65
  5. Step 5: Solve for x
    x = 126,277.65/525.40
  6. Step 6: Final answer
    x = 240.35

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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.