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Finding the Fourth Proportional to 291.93, 437.88 and 129.49

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Solution

The fourth proportional to 291.93, 437.88 and 129.49 is: 194.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.93 : 437.88 = 129.49 : x
  2. Step 2: Convert to fraction form
    291.93/437.88 = 129.49/x
  3. Step 3: Cross multiply
    291.93x = 437.88 × 129.49
  4. Step 4: Simplify right side
    291.93x = 56,701.08
  5. Step 5: Solve for x
    x = 56,701.08/291.93
  6. Step 6: Final answer
    x = 194.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.