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Finding the Fourth Proportional to 525.07, 724.39 and 338.55

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Solution

The fourth proportional to 525.07, 724.39 and 338.55 is: 467.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.07 : 724.39 = 338.55 : x
  2. Step 2: Convert to fraction form
    525.07/724.39 = 338.55/x
  3. Step 3: Cross multiply
    525.07x = 724.39 × 338.55
  4. Step 4: Simplify right side
    525.07x = 245,242.23
  5. Step 5: Solve for x
    x = 245,242.23/525.07
  6. Step 6: Final answer
    x = 467.07

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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.