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Finding the Fourth Proportional to 534.20, 736.83 and 347.40

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Solution

The fourth proportional to 534.20, 736.83 and 347.40 is: 479.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.20 : 736.83 = 347.40 : x
  2. Step 2: Convert to fraction form
    534.20/736.83 = 347.40/x
  3. Step 3: Cross multiply
    534.20x = 736.83 × 347.40
  4. Step 4: Simplify right side
    534.20x = 255,974.74
  5. Step 5: Solve for x
    x = 255,974.74/534.20
  6. Step 6: Final answer
    x = 479.18

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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.