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Finding the Fourth Proportional to 534.50, 737.81 and 313.45

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Solution

The fourth proportional to 534.50, 737.81 and 313.45 is: 432.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.50 : 737.81 = 313.45 : x
  2. Step 2: Convert to fraction form
    534.50/737.81 = 313.45/x
  3. Step 3: Cross multiply
    534.50x = 737.81 × 313.45
  4. Step 4: Simplify right side
    534.50x = 231,268.46
  5. Step 5: Solve for x
    x = 231,268.46/534.50
  6. Step 6: Final answer
    x = 432.68

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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.