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Finding the Fourth Proportional to 534.34, 737.31 and 313.30

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Solution

The fourth proportional to 534.34, 737.31 and 313.30 is: 432.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.34 : 737.31 = 313.30 : x
  2. Step 2: Convert to fraction form
    534.34/737.31 = 313.30/x
  3. Step 3: Cross multiply
    534.34x = 737.31 × 313.30
  4. Step 4: Simplify right side
    534.34x = 230,999.22
  5. Step 5: Solve for x
    x = 230,999.22/534.34
  6. Step 6: Final answer
    x = 432.31

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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.