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Finding the Fourth Proportional to 479.63, 718.22 and 402.19

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Solution

The fourth proportional to 479.63, 718.22 and 402.19 is: 602.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.63 : 718.22 = 402.19 : x
  2. Step 2: Convert to fraction form
    479.63/718.22 = 402.19/x
  3. Step 3: Cross multiply
    479.63x = 718.22 × 402.19
  4. Step 4: Simplify right side
    479.63x = 288,860.11
  5. Step 5: Solve for x
    x = 288,860.11/479.63
  6. Step 6: Final answer
    x = 602.25

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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.