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Finding the Fourth Proportional to 476.04, 712.80 and 411.24

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Solution

The fourth proportional to 476.04, 712.80 and 411.24 is: 615.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.04 : 712.80 = 411.24 : x
  2. Step 2: Convert to fraction form
    476.04/712.80 = 411.24/x
  3. Step 3: Cross multiply
    476.04x = 712.80 × 411.24
  4. Step 4: Simplify right side
    476.04x = 293,131.87
  5. Step 5: Solve for x
    x = 293,131.87/476.04
  6. Step 6: Final answer
    x = 615.77

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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.