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Finding the Fourth Proportional to 474.60, 654.70 and 343.38

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Solution

The fourth proportional to 474.60, 654.70 and 343.38 is: 473.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.60 : 654.70 = 343.38 : x
  2. Step 2: Convert to fraction form
    474.60/654.70 = 343.38/x
  3. Step 3: Cross multiply
    474.60x = 654.70 × 343.38
  4. Step 4: Simplify right side
    474.60x = 224,810.89
  5. Step 5: Solve for x
    x = 224,810.89/474.60
  6. Step 6: Final answer
    x = 473.68

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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.