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Finding the Fourth Proportional to 655.65, 979.49 and 469.07

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Solution

The fourth proportional to 655.65, 979.49 and 469.07 is: 700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.65 : 979.49 = 469.07 : x
  2. Step 2: Convert to fraction form
    655.65/979.49 = 469.07/x
  3. Step 3: Cross multiply
    655.65x = 979.49 × 469.07
  4. Step 4: Simplify right side
    655.65x = 459,450.65
  5. Step 5: Solve for x
    x = 459,450.65/655.65
  6. Step 6: Final answer
    x = 700.76

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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.