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Finding the Fourth Proportional to 476.56, 658.02 and 345.88

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Solution

The fourth proportional to 476.56, 658.02 and 345.88 is: 477.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.56 : 658.02 = 345.88 : x
  2. Step 2: Convert to fraction form
    476.56/658.02 = 345.88/x
  3. Step 3: Cross multiply
    476.56x = 658.02 × 345.88
  4. Step 4: Simplify right side
    476.56x = 227,595.96
  5. Step 5: Solve for x
    x = 227,595.96/476.56
  6. Step 6: Final answer
    x = 477.58

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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.