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Finding the Fourth Proportional to 189.07, 284.99 and 177.32

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Solution

The fourth proportional to 189.07, 284.99 and 177.32 is: 267.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189.07 : 284.99 = 177.32 : x
  2. Step 2: Convert to fraction form
    189.07/284.99 = 177.32/x
  3. Step 3: Cross multiply
    189.07x = 284.99 × 177.32
  4. Step 4: Simplify right side
    189.07x = 50,534.25
  5. Step 5: Solve for x
    x = 50,534.25/189.07
  6. Step 6: Final answer
    x = 267.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.