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Finding the Fourth Proportional to 533.16, 735.66 and 312.05

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Solution

The fourth proportional to 533.16, 735.66 and 312.05 is: 430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.16 : 735.66 = 312.05 : x
  2. Step 2: Convert to fraction form
    533.16/735.66 = 312.05/x
  3. Step 3: Cross multiply
    533.16x = 735.66 × 312.05
  4. Step 4: Simplify right side
    533.16x = 229,563.66
  5. Step 5: Solve for x
    x = 229,563.66/533.16
  6. Step 6: Final answer
    x = 430.57

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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.