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Finding the Fourth Proportional to 476.48, 714.74 and 423.04

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Solution

The fourth proportional to 476.48, 714.74 and 423.04 is: 634.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.48 : 714.74 = 423.04 : x
  2. Step 2: Convert to fraction form
    476.48/714.74 = 423.04/x
  3. Step 3: Cross multiply
    476.48x = 714.74 × 423.04
  4. Step 4: Simplify right side
    476.48x = 302,363.61
  5. Step 5: Solve for x
    x = 302,363.61/476.48
  6. Step 6: Final answer
    x = 634.58

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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.