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Finding the Fourth Proportional to 46.65, 70.06 and 45.82

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Solution

The fourth proportional to 46.65, 70.06 and 45.82 is: 68.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.65 : 70.06 = 45.82 : x
  2. Step 2: Convert to fraction form
    46.65/70.06 = 45.82/x
  3. Step 3: Cross multiply
    46.65x = 70.06 × 45.82
  4. Step 4: Simplify right side
    46.65x = 3,209.57
  5. Step 5: Solve for x
    x = 3,209.57/46.65
  6. Step 6: Final answer
    x = 68.80

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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.