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Finding the Fourth Proportional to 316.76, 474.52 and 305.56

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Solution

The fourth proportional to 316.76, 474.52 and 305.56 is: 457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.76 : 474.52 = 305.56 : x
  2. Step 2: Convert to fraction form
    316.76/474.52 = 305.56/x
  3. Step 3: Cross multiply
    316.76x = 474.52 × 305.56
  4. Step 4: Simplify right side
    316.76x = 144,994.33
  5. Step 5: Solve for x
    x = 144,994.33/316.76
  6. Step 6: Final answer
    x = 457.74

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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.