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Finding the Fourth Proportional to 476.12, 714.27 and 322.40

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Solution

The fourth proportional to 476.12, 714.27 and 322.40 is: 483.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.12 : 714.27 = 322.40 : x
  2. Step 2: Convert to fraction form
    476.12/714.27 = 322.40/x
  3. Step 3: Cross multiply
    476.12x = 714.27 × 322.40
  4. Step 4: Simplify right side
    476.12x = 230,280.65
  5. Step 5: Solve for x
    x = 230,280.65/476.12
  6. Step 6: Final answer
    x = 483.66

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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.