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Finding the Fourth Proportional to 476.82, 715.20 and 188.28

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Solution

The fourth proportional to 476.82, 715.20 and 188.28 is: 282.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.82 : 715.20 = 188.28 : x
  2. Step 2: Convert to fraction form
    476.82/715.20 = 188.28/x
  3. Step 3: Cross multiply
    476.82x = 715.20 × 188.28
  4. Step 4: Simplify right side
    476.82x = 134,657.86
  5. Step 5: Solve for x
    x = 134,657.86/476.82
  6. Step 6: Final answer
    x = 282.41

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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.