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Finding the Fourth Proportional to 292.47, 438.64 and 188.04

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Solution

The fourth proportional to 292.47, 438.64 and 188.04 is: 282.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    292.47 : 438.64 = 188.04 : x
  2. Step 2: Convert to fraction form
    292.47/438.64 = 188.04/x
  3. Step 3: Cross multiply
    292.47x = 438.64 × 188.04
  4. Step 4: Simplify right side
    292.47x = 82,481.87
  5. Step 5: Solve for x
    x = 82,481.87/292.47
  6. Step 6: Final answer
    x = 282.02

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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.