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Finding the Fourth Proportional to 533.19, 735.73 and 312.17

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Solution

The fourth proportional to 533.19, 735.73 and 312.17 is: 430.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.19 : 735.73 = 312.17 : x
  2. Step 2: Convert to fraction form
    533.19/735.73 = 312.17/x
  3. Step 3: Cross multiply
    533.19x = 735.73 × 312.17
  4. Step 4: Simplify right side
    533.19x = 229,672.83
  5. Step 5: Solve for x
    x = 229,672.83/533.19
  6. Step 6: Final answer
    x = 430.75

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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.