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Finding the Fourth Proportional to 479.71, 722 and 358.62

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Solution

The fourth proportional to 479.71, 722 and 358.62 is: 539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.71 : 722 = 358.62 : x
  2. Step 2: Convert to fraction form
    479.71/722 = 358.62/x
  3. Step 3: Cross multiply
    479.71x = 722 × 358.62
  4. Step 4: Simplify right side
    479.71x = 258,923.64
  5. Step 5: Solve for x
    x = 258,923.64/479.71
  6. Step 6: Final answer
    x = 539.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.