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Finding the Fourth Proportional to 46.42, 64.03 and 30.03

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Solution

The fourth proportional to 46.42, 64.03 and 30.03 is: 41.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.42 : 64.03 = 30.03 : x
  2. Step 2: Convert to fraction form
    46.42/64.03 = 30.03/x
  3. Step 3: Cross multiply
    46.42x = 64.03 × 30.03
  4. Step 4: Simplify right side
    46.42x = 1,922.82
  5. Step 5: Solve for x
    x = 1,922.82/46.42
  6. Step 6: Final answer
    x = 41.42

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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.