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Finding the Fourth Proportional to 525.31, 724.93 and 292.43

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Solution

The fourth proportional to 525.31, 724.93 and 292.43 is: 403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.31 : 724.93 = 292.43 : x
  2. Step 2: Convert to fraction form
    525.31/724.93 = 292.43/x
  3. Step 3: Cross multiply
    525.31x = 724.93 × 292.43
  4. Step 4: Simplify right side
    525.31x = 211,992.36
  5. Step 5: Solve for x
    x = 211,992.36/525.31
  6. Step 6: Final answer
    x = 403.56

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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.