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Finding the Fourth Proportional to 476.28, 714.47 and 245.12

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Solution

The fourth proportional to 476.28, 714.47 and 245.12 is: 367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.28 : 714.47 = 245.12 : x
  2. Step 2: Convert to fraction form
    476.28/714.47 = 245.12/x
  3. Step 3: Cross multiply
    476.28x = 714.47 × 245.12
  4. Step 4: Simplify right side
    476.28x = 175,126.09
  5. Step 5: Solve for x
    x = 175,126.09/476.28
  6. Step 6: Final answer
    x = 367.70

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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.