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Finding the Fourth Proportional to 504.46, 696.15 and 305.29

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Solution

The fourth proportional to 504.46, 696.15 and 305.29 is: 421.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.46 : 696.15 = 305.29 : x
  2. Step 2: Convert to fraction form
    504.46/696.15 = 305.29/x
  3. Step 3: Cross multiply
    504.46x = 696.15 × 305.29
  4. Step 4: Simplify right side
    504.46x = 212,527.63
  5. Step 5: Solve for x
    x = 212,527.63/504.46
  6. Step 6: Final answer
    x = 421.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.