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Finding the Fourth Proportional to 314.71, 436.13 and 310.31

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Solution

The fourth proportional to 314.71, 436.13 and 310.31 is: 430.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.71 : 436.13 = 310.31 : x
  2. Step 2: Convert to fraction form
    314.71/436.13 = 310.31/x
  3. Step 3: Cross multiply
    314.71x = 436.13 × 310.31
  4. Step 4: Simplify right side
    314.71x = 135,334.10
  5. Step 5: Solve for x
    x = 135,334.10/314.71
  6. Step 6: Final answer
    x = 430.03

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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.