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Finding the Fourth Proportional to 46.98, 70.04 and 45.79

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Solution

The fourth proportional to 46.98, 70.04 and 45.79 is: 68.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.98 : 70.04 = 45.79 : x
  2. Step 2: Convert to fraction form
    46.98/70.04 = 45.79/x
  3. Step 3: Cross multiply
    46.98x = 70.04 × 45.79
  4. Step 4: Simplify right side
    46.98x = 3,206.90
  5. Step 5: Solve for x
    x = 3,206.90/46.98
  6. Step 6: Final answer
    x = 68.27

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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.