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Finding the Fourth Proportional to 464.85, 696.74 and 448.65

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Solution

The fourth proportional to 464.85, 696.74 and 448.65 is: 672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.85 : 696.74 = 448.65 : x
  2. Step 2: Convert to fraction form
    464.85/696.74 = 448.65/x
  3. Step 3: Cross multiply
    464.85x = 696.74 × 448.65
  4. Step 4: Simplify right side
    464.85x = 312,590.16
  5. Step 5: Solve for x
    x = 312,590.16/464.85
  6. Step 6: Final answer
    x = 672.45

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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.