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Finding the Fourth Proportional to 535.04, 738.21 and 313.98

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Solution

The fourth proportional to 535.04, 738.21 and 313.98 is: 433.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.04 : 738.21 = 313.98 : x
  2. Step 2: Convert to fraction form
    535.04/738.21 = 313.98/x
  3. Step 3: Cross multiply
    535.04x = 738.21 × 313.98
  4. Step 4: Simplify right side
    535.04x = 231,781.58
  5. Step 5: Solve for x
    x = 231,781.58/535.04
  6. Step 6: Final answer
    x = 433.21

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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.