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Finding the Fourth Proportional to 476.84, 715.42 and 245.80

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Solution

The fourth proportional to 476.84, 715.42 and 245.80 is: 368.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.84 : 715.42 = 245.80 : x
  2. Step 2: Convert to fraction form
    476.84/715.42 = 245.80/x
  3. Step 3: Cross multiply
    476.84x = 715.42 × 245.80
  4. Step 4: Simplify right side
    476.84x = 175,850.24
  5. Step 5: Solve for x
    x = 175,850.24/476.84
  6. Step 6: Final answer
    x = 368.78

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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.