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Finding the Fourth Proportional to 476.20, 714.40 and 202.22

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Solution

The fourth proportional to 476.20, 714.40 and 202.22 is: 303.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.20 : 714.40 = 202.22 : x
  2. Step 2: Convert to fraction form
    476.20/714.40 = 202.22/x
  3. Step 3: Cross multiply
    476.20x = 714.40 × 202.22
  4. Step 4: Simplify right side
    476.20x = 144,465.97
  5. Step 5: Solve for x
    x = 144,465.97/476.20
  6. Step 6: Final answer
    x = 303.37

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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.