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Finding the Fourth Proportional to 292.16, 437.86 and 129.49

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Solution

The fourth proportional to 292.16, 437.86 and 129.49 is: 194.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.16 : 437.86 = 129.49 : x
  2. Step 2: Convert to fraction form
    292.16/437.86 = 129.49/x
  3. Step 3: Cross multiply
    292.16x = 437.86 × 129.49
  4. Step 4: Simplify right side
    292.16x = 56,695.65
  5. Step 5: Solve for x
    x = 56,695.65/292.16
  6. Step 6: Final answer
    x = 194.06

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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.