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Finding the Fourth Proportional to 531.09, 796.59 and 257.01

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Solution

The fourth proportional to 531.09, 796.59 and 257.01 is: 385.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.09 : 796.59 = 257.01 : x
  2. Step 2: Convert to fraction form
    531.09/796.59 = 257.01/x
  3. Step 3: Cross multiply
    531.09x = 796.59 × 257.01
  4. Step 4: Simplify right side
    531.09x = 204,731.60
  5. Step 5: Solve for x
    x = 204,731.60/531.09
  6. Step 6: Final answer
    x = 385.49

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Double scale
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Similar ratio
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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.