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Finding the Fourth Proportional to 433.05, 648.54 and 355.47

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Solution

The fourth proportional to 433.05, 648.54 and 355.47 is: 532.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.05 : 648.54 = 355.47 : x
  2. Step 2: Convert to fraction form
    433.05/648.54 = 355.47/x
  3. Step 3: Cross multiply
    433.05x = 648.54 × 355.47
  4. Step 4: Simplify right side
    433.05x = 230,536.51
  5. Step 5: Solve for x
    x = 230,536.51/433.05
  6. Step 6: Final answer
    x = 532.36

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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.