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Finding the Fourth Proportional to 622.30, 933.48 and 313.79

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Solution

The fourth proportional to 622.30, 933.48 and 313.79 is: 470.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.30 : 933.48 = 313.79 : x
  2. Step 2: Convert to fraction form
    622.30/933.48 = 313.79/x
  3. Step 3: Cross multiply
    622.30x = 933.48 × 313.79
  4. Step 4: Simplify right side
    622.30x = 292,913.57
  5. Step 5: Solve for x
    x = 292,913.57/622.30
  6. Step 6: Final answer
    x = 470.70

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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.