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Finding the Fourth Proportional to 521.06, 719.01 and 324.63

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Solution

The fourth proportional to 521.06, 719.01 and 324.63 is: 447.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.06 : 719.01 = 324.63 : x
  2. Step 2: Convert to fraction form
    521.06/719.01 = 324.63/x
  3. Step 3: Cross multiply
    521.06x = 719.01 × 324.63
  4. Step 4: Simplify right side
    521.06x = 233,412.22
  5. Step 5: Solve for x
    x = 233,412.22/521.06
  6. Step 6: Final answer
    x = 447.96

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.