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Finding the Fourth Proportional to 534.98, 738.35 and 313.90

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Solution

The fourth proportional to 534.98, 738.35 and 313.90 is: 433.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.98 : 738.35 = 313.90 : x
  2. Step 2: Convert to fraction form
    534.98/738.35 = 313.90/x
  3. Step 3: Cross multiply
    534.98x = 738.35 × 313.90
  4. Step 4: Simplify right side
    534.98x = 231,768.07
  5. Step 5: Solve for x
    x = 231,768.07/534.98
  6. Step 6: Final answer
    x = 433.23

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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.