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Finding the Fourth Proportional to 475.90, 656.40 and 301.12

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Solution

The fourth proportional to 475.90, 656.40 and 301.12 is: 415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.90 : 656.40 = 301.12 : x
  2. Step 2: Convert to fraction form
    475.90/656.40 = 301.12/x
  3. Step 3: Cross multiply
    475.90x = 656.40 × 301.12
  4. Step 4: Simplify right side
    475.90x = 197,655.17
  5. Step 5: Solve for x
    x = 197,655.17/475.90
  6. Step 6: Final answer
    x = 415.33

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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.