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Finding the Fourth Proportional to 476.76, 715.46 and 188.18

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Solution

The fourth proportional to 476.76, 715.46 and 188.18 is: 282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.76 : 715.46 = 188.18 : x
  2. Step 2: Convert to fraction form
    476.76/715.46 = 188.18/x
  3. Step 3: Cross multiply
    476.76x = 715.46 × 188.18
  4. Step 4: Simplify right side
    476.76x = 134,635.26
  5. Step 5: Solve for x
    x = 134,635.26/476.76
  6. Step 6: Final answer
    x = 282.40

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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.