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Finding the Fourth Proportional to 473.12, 709.16 and 308.38

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Solution

The fourth proportional to 473.12, 709.16 and 308.38 is: 462.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.12 : 709.16 = 308.38 : x
  2. Step 2: Convert to fraction form
    473.12/709.16 = 308.38/x
  3. Step 3: Cross multiply
    473.12x = 709.16 × 308.38
  4. Step 4: Simplify right side
    473.12x = 218,690.76
  5. Step 5: Solve for x
    x = 218,690.76/473.12
  6. Step 6: Final answer
    x = 462.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.