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Finding the Fourth Proportional to 523.19, 721.46 and 348.23

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Solution

The fourth proportional to 523.19, 721.46 and 348.23 is: 480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.19 : 721.46 = 348.23 : x
  2. Step 2: Convert to fraction form
    523.19/721.46 = 348.23/x
  3. Step 3: Cross multiply
    523.19x = 721.46 × 348.23
  4. Step 4: Simplify right side
    523.19x = 251,232.27
  5. Step 5: Solve for x
    x = 251,232.27/523.19
  6. Step 6: Final answer
    x = 480.19

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Double scale
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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.