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Finding the Fourth Proportional to 475.77, 656.70 and 301.20

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Solution

The fourth proportional to 475.77, 656.70 and 301.20 is: 415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.77 : 656.70 = 301.20 : x
  2. Step 2: Convert to fraction form
    475.77/656.70 = 301.20/x
  3. Step 3: Cross multiply
    475.77x = 656.70 × 301.20
  4. Step 4: Simplify right side
    475.77x = 197,798.04
  5. Step 5: Solve for x
    x = 197,798.04/475.77
  6. Step 6: Final answer
    x = 415.74

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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.