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Finding the Fourth Proportional to 313.29, 469.53 and 252.45

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Solution

The fourth proportional to 313.29, 469.53 and 252.45 is: 378.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.29 : 469.53 = 252.45 : x
  2. Step 2: Convert to fraction form
    313.29/469.53 = 252.45/x
  3. Step 3: Cross multiply
    313.29x = 469.53 × 252.45
  4. Step 4: Simplify right side
    313.29x = 118,532.85
  5. Step 5: Solve for x
    x = 118,532.85/313.29
  6. Step 6: Final answer
    x = 378.35

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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.