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Finding the Fourth Proportional to 479.01, 718.51 and 455.69

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Solution

The fourth proportional to 479.01, 718.51 and 455.69 is: 683.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.01 : 718.51 = 455.69 : x
  2. Step 2: Convert to fraction form
    479.01/718.51 = 455.69/x
  3. Step 3: Cross multiply
    479.01x = 718.51 × 455.69
  4. Step 4: Simplify right side
    479.01x = 327,414.23
  5. Step 5: Solve for x
    x = 327,414.23/479.01
  6. Step 6: Final answer
    x = 683.53

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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.