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Finding the Fourth Proportional to 522.47, 721.35 and 365.42

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Solution

The fourth proportional to 522.47, 721.35 and 365.42 is: 504.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.47 : 721.35 = 365.42 : x
  2. Step 2: Convert to fraction form
    522.47/721.35 = 365.42/x
  3. Step 3: Cross multiply
    522.47x = 721.35 × 365.42
  4. Step 4: Simplify right side
    522.47x = 263,592.11
  5. Step 5: Solve for x
    x = 263,592.11/522.47
  6. Step 6: Final answer
    x = 504.52

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.