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Finding the Fourth Proportional to 476.75, 715.13 and 188.39

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Solution

The fourth proportional to 476.75, 715.13 and 188.39 is: 282.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.75 : 715.13 = 188.39 : x
  2. Step 2: Convert to fraction form
    476.75/715.13 = 188.39/x
  3. Step 3: Cross multiply
    476.75x = 715.13 × 188.39
  4. Step 4: Simplify right side
    476.75x = 134,723.34
  5. Step 5: Solve for x
    x = 134,723.34/476.75
  6. Step 6: Final answer
    x = 282.59

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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.