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Finding the Fourth Proportional to 355.45, 532.43 and 297.51

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Solution

The fourth proportional to 355.45, 532.43 and 297.51 is: 445.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355.45 : 532.43 = 297.51 : x
  2. Step 2: Convert to fraction form
    355.45/532.43 = 297.51/x
  3. Step 3: Cross multiply
    355.45x = 532.43 × 297.51
  4. Step 4: Simplify right side
    355.45x = 158,401.33
  5. Step 5: Solve for x
    x = 158,401.33/355.45
  6. Step 6: Final answer
    x = 445.64

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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.