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Finding the Fourth Proportional to 476.10, 628.70 and 476.10

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Solution

The fourth proportional to 476.10, 628.70 and 476.10 is: 628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.10 : 628.70 = 476.10 : x
  2. Step 2: Convert to fraction form
    476.10/628.70 = 476.10/x
  3. Step 3: Cross multiply
    476.10x = 628.70 × 476.10
  4. Step 4: Simplify right side
    476.10x = 299,324.07
  5. Step 5: Solve for x
    x = 299,324.07/476.10
  6. Step 6: Final answer
    x = 628.70

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.