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Finding the Fourth Proportional to 525.45, 788.79 and 417.33

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Solution

The fourth proportional to 525.45, 788.79 and 417.33 is: 626.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.45 : 788.79 = 417.33 : x
  2. Step 2: Convert to fraction form
    525.45/788.79 = 417.33/x
  3. Step 3: Cross multiply
    525.45x = 788.79 × 417.33
  4. Step 4: Simplify right side
    525.45x = 329,185.73
  5. Step 5: Solve for x
    x = 329,185.73/525.45
  6. Step 6: Final answer
    x = 626.48

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Double scale
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Similar ratio
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1.5x scale

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.