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Finding the Fourth Proportional to 448.61, 618.91 and 262.03

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Solution

The fourth proportional to 448.61, 618.91 and 262.03 is: 361.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.61 : 618.91 = 262.03 : x
  2. Step 2: Convert to fraction form
    448.61/618.91 = 262.03/x
  3. Step 3: Cross multiply
    448.61x = 618.91 × 262.03
  4. Step 4: Simplify right side
    448.61x = 162,172.99
  5. Step 5: Solve for x
    x = 162,172.99/448.61
  6. Step 6: Final answer
    x = 361.50

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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.