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Finding the Fourth Proportional to 313.94, 473.40 and 305.94

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Solution

The fourth proportional to 313.94, 473.40 and 305.94 is: 461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.94 : 473.40 = 305.94 : x
  2. Step 2: Convert to fraction form
    313.94/473.40 = 305.94/x
  3. Step 3: Cross multiply
    313.94x = 473.40 × 305.94
  4. Step 4: Simplify right side
    313.94x = 144,830.47
  5. Step 5: Solve for x
    x = 144,830.47/313.94
  6. Step 6: Final answer
    x = 461.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.