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Finding the Fourth Proportional to 525.12, 723.12 and 481.92

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Solution

The fourth proportional to 525.12, 723.12 and 481.92 is: 663.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.12 : 723.12 = 481.92 : x
  2. Step 2: Convert to fraction form
    525.12/723.12 = 481.92/x
  3. Step 3: Cross multiply
    525.12x = 723.12 × 481.92
  4. Step 4: Simplify right side
    525.12x = 348,485.99
  5. Step 5: Solve for x
    x = 348,485.99/525.12
  6. Step 6: Final answer
    x = 663.63

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.