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Finding the Fourth Proportional to 482.99, 722.90 and 263.28

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Solution

The fourth proportional to 482.99, 722.90 and 263.28 is: 394.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.99 : 722.90 = 263.28 : x
  2. Step 2: Convert to fraction form
    482.99/722.90 = 263.28/x
  3. Step 3: Cross multiply
    482.99x = 722.90 × 263.28
  4. Step 4: Simplify right side
    482.99x = 190,325.11
  5. Step 5: Solve for x
    x = 190,325.11/482.99
  6. Step 6: Final answer
    x = 394.06

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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.