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Finding the Fourth Proportional to 535.40, 739.20 and 336.30

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Solution

The fourth proportional to 535.40, 739.20 and 336.30 is: 464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    535.40 : 739.20 = 336.30 : x
  2. Step 2: Convert to fraction form
    535.40/739.20 = 336.30/x
  3. Step 3: Cross multiply
    535.40x = 739.20 × 336.30
  4. Step 4: Simplify right side
    535.40x = 248,592.96
  5. Step 5: Solve for x
    x = 248,592.96/535.40
  6. Step 6: Final answer
    x = 464.32

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1.5x scale

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.