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Finding the Fourth Proportional to 534.93, 738.09 and 313.80

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Solution

The fourth proportional to 534.93, 738.09 and 313.80 is: 432.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.93 : 738.09 = 313.80 : x
  2. Step 2: Convert to fraction form
    534.93/738.09 = 313.80/x
  3. Step 3: Cross multiply
    534.93x = 738.09 × 313.80
  4. Step 4: Simplify right side
    534.93x = 231,612.64
  5. Step 5: Solve for x
    x = 231,612.64/534.93
  6. Step 6: Final answer
    x = 432.98

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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.