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Finding the Fourth Proportional to 524.80, 724.23 and 338.65

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Solution

The fourth proportional to 524.80, 724.23 and 338.65 is: 467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.80 : 724.23 = 338.65 : x
  2. Step 2: Convert to fraction form
    524.80/724.23 = 338.65/x
  3. Step 3: Cross multiply
    524.80x = 724.23 × 338.65
  4. Step 4: Simplify right side
    524.80x = 245,260.49
  5. Step 5: Solve for x
    x = 245,260.49/524.80
  6. Step 6: Final answer
    x = 467.34

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1.5x scale

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.