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Finding the Fourth Proportional to 297.41, 407.50 and 287.04

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Solution

The fourth proportional to 297.41, 407.50 and 287.04 is: 393.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.41 : 407.50 = 287.04 : x
  2. Step 2: Convert to fraction form
    297.41/407.50 = 287.04/x
  3. Step 3: Cross multiply
    297.41x = 407.50 × 287.04
  4. Step 4: Simplify right side
    297.41x = 116,969.61
  5. Step 5: Solve for x
    x = 116,969.61/297.41
  6. Step 6: Final answer
    x = 393.30

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.