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Finding the Fourth Proportional to 533.99, 736.85 and 312.93

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Solution

The fourth proportional to 533.99, 736.85 and 312.93 is: 431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.99 : 736.85 = 312.93 : x
  2. Step 2: Convert to fraction form
    533.99/736.85 = 312.93/x
  3. Step 3: Cross multiply
    533.99x = 736.85 × 312.93
  4. Step 4: Simplify right side
    533.99x = 230,580.91
  5. Step 5: Solve for x
    x = 230,580.91/533.99
  6. Step 6: Final answer
    x = 431.81

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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.