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Finding the Fourth Proportional to 313.04, 434.90 and 310.22

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Solution

The fourth proportional to 313.04, 434.90 and 310.22 is: 430.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    313.04 : 434.90 = 310.22 : x
  2. Step 2: Convert to fraction form
    313.04/434.90 = 310.22/x
  3. Step 3: Cross multiply
    313.04x = 434.90 × 310.22
  4. Step 4: Simplify right side
    313.04x = 134,914.68
  5. Step 5: Solve for x
    x = 134,914.68/313.04
  6. Step 6: Final answer
    x = 430.98

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.