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Finding the Fourth Proportional to 531.32, 796.26 and 386.36

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Solution

The fourth proportional to 531.32, 796.26 and 386.36 is: 579.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.32 : 796.26 = 386.36 : x
  2. Step 2: Convert to fraction form
    531.32/796.26 = 386.36/x
  3. Step 3: Cross multiply
    531.32x = 796.26 × 386.36
  4. Step 4: Simplify right side
    531.32x = 307,643.01
  5. Step 5: Solve for x
    x = 307,643.01/531.32
  6. Step 6: Final answer
    x = 579.02

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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.