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Finding the Fourth Proportional to 534.80, 738.08 and 403.60

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Solution

The fourth proportional to 534.80, 738.08 and 403.60 is: 557.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    534.80 : 738.08 = 403.60 : x
  2. Step 2: Convert to fraction form
    534.80/738.08 = 403.60/x
  3. Step 3: Cross multiply
    534.80x = 738.08 × 403.60
  4. Step 4: Simplify right side
    534.80x = 297,889.09
  5. Step 5: Solve for x
    x = 297,889.09/534.80
  6. Step 6: Final answer
    x = 557.01

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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.