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Finding the Fourth Proportional to 525.50, 724.94 and 338.90

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Solution

The fourth proportional to 525.50, 724.94 and 338.90 is: 467.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.50 : 724.94 = 338.90 : x
  2. Step 2: Convert to fraction form
    525.50/724.94 = 338.90/x
  3. Step 3: Cross multiply
    525.50x = 724.94 × 338.90
  4. Step 4: Simplify right side
    525.50x = 245,681.65
  5. Step 5: Solve for x
    x = 245,681.65/525.50
  6. Step 6: Final answer
    x = 467.52

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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.