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Finding the Fourth Proportional to 534.87, 738.18 and 313.88

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Solution

The fourth proportional to 534.87, 738.18 and 313.88 is: 433.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.87 : 738.18 = 313.88 : x
  2. Step 2: Convert to fraction form
    534.87/738.18 = 313.88/x
  3. Step 3: Cross multiply
    534.87x = 738.18 × 313.88
  4. Step 4: Simplify right side
    534.87x = 231,696.25
  5. Step 5: Solve for x
    x = 231,696.25/534.87
  6. Step 6: Final answer
    x = 433.18

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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.