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Finding the Fourth Proportional to 46.04, 68.72 and 45.09

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Solution

The fourth proportional to 46.04, 68.72 and 45.09 is: 67.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.04 : 68.72 = 45.09 : x
  2. Step 2: Convert to fraction form
    46.04/68.72 = 45.09/x
  3. Step 3: Cross multiply
    46.04x = 68.72 × 45.09
  4. Step 4: Simplify right side
    46.04x = 3,098.36
  5. Step 5: Solve for x
    x = 3,098.36/46.04
  6. Step 6: Final answer
    x = 67.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.