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Finding the Fourth Proportional to 342.64, 514.07 and 188.65

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Solution

The fourth proportional to 342.64, 514.07 and 188.65 is: 283.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.64 : 514.07 = 188.65 : x
  2. Step 2: Convert to fraction form
    342.64/514.07 = 188.65/x
  3. Step 3: Cross multiply
    342.64x = 514.07 × 188.65
  4. Step 4: Simplify right side
    342.64x = 96,979.31
  5. Step 5: Solve for x
    x = 96,979.31/342.64
  6. Step 6: Final answer
    x = 283.04

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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.