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Finding the Fourth Proportional to 522.52, 721.38 and 348.28

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Solution

The fourth proportional to 522.52, 721.38 and 348.28 is: 480.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.52 : 721.38 = 348.28 : x
  2. Step 2: Convert to fraction form
    522.52/721.38 = 348.28/x
  3. Step 3: Cross multiply
    522.52x = 721.38 × 348.28
  4. Step 4: Simplify right side
    522.52x = 251,242.23
  5. Step 5: Solve for x
    x = 251,242.23/522.52
  6. Step 6: Final answer
    x = 480.83

Related Problems

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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.