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Finding the Fourth Proportional to 297.02, 445.53 and 91.58

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Solution

The fourth proportional to 297.02, 445.53 and 91.58 is: 137.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.02 : 445.53 = 91.58 : x
  2. Step 2: Convert to fraction form
    297.02/445.53 = 91.58/x
  3. Step 3: Cross multiply
    297.02x = 445.53 × 91.58
  4. Step 4: Simplify right side
    297.02x = 40,799.41
  5. Step 5: Solve for x
    x = 40,799.41/297.02
  6. Step 6: Final answer
    x = 137.36

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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.