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Finding the Fourth Proportional to 671.65, 925.58 and 484.79

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Solution

The fourth proportional to 671.65, 925.58 and 484.79 is: 668.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.65 : 925.58 = 484.79 : x
  2. Step 2: Convert to fraction form
    671.65/925.58 = 484.79/x
  3. Step 3: Cross multiply
    671.65x = 925.58 × 484.79
  4. Step 4: Simplify right side
    671.65x = 448,708.51
  5. Step 5: Solve for x
    x = 448,708.51/671.65
  6. Step 6: Final answer
    x = 668.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.