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Finding the Fourth Proportional to 482.48, 721.90 and 360.32

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Solution

The fourth proportional to 482.48, 721.90 and 360.32 is: 539.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.48 : 721.90 = 360.32 : x
  2. Step 2: Convert to fraction form
    482.48/721.90 = 360.32/x
  3. Step 3: Cross multiply
    482.48x = 721.90 × 360.32
  4. Step 4: Simplify right side
    482.48x = 260,115.01
  5. Step 5: Solve for x
    x = 260,115.01/482.48
  6. Step 6: Final answer
    x = 539.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.