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Finding the Fourth Proportional to 476.70, 656.55 and 414.06

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Solution

The fourth proportional to 476.70, 656.55 and 414.06 is: 570.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.70 : 656.55 = 414.06 : x
  2. Step 2: Convert to fraction form
    476.70/656.55 = 414.06/x
  3. Step 3: Cross multiply
    476.70x = 656.55 × 414.06
  4. Step 4: Simplify right side
    476.70x = 271,851.09
  5. Step 5: Solve for x
    x = 271,851.09/476.70
  6. Step 6: Final answer
    x = 570.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.