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Finding the Fourth Proportional to 448.11, 621.57 and 433.35

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Solution

The fourth proportional to 448.11, 621.57 and 433.35 is: 601.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    448.11 : 621.57 = 433.35 : x
  2. Step 2: Convert to fraction form
    448.11/621.57 = 433.35/x
  3. Step 3: Cross multiply
    448.11x = 621.57 × 433.35
  4. Step 4: Simplify right side
    448.11x = 269,357.36
  5. Step 5: Solve for x
    x = 269,357.36/448.11
  6. Step 6: Final answer
    x = 601.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.