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Finding the Fourth Proportional to 534.55, 737.85 and 313.49

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Solution

The fourth proportional to 534.55, 737.85 and 313.49 is: 432.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.55 : 737.85 = 313.49 : x
  2. Step 2: Convert to fraction form
    534.55/737.85 = 313.49/x
  3. Step 3: Cross multiply
    534.55x = 737.85 × 313.49
  4. Step 4: Simplify right side
    534.55x = 231,310.44
  5. Step 5: Solve for x
    x = 231,310.44/534.55
  6. Step 6: Final answer
    x = 432.72

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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.