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Finding the Fourth Proportional to 631.53, 946.47 and 478.44

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Solution

The fourth proportional to 631.53, 946.47 and 478.44 is: 717.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.53 : 946.47 = 478.44 : x
  2. Step 2: Convert to fraction form
    631.53/946.47 = 478.44/x
  3. Step 3: Cross multiply
    631.53x = 946.47 × 478.44
  4. Step 4: Simplify right side
    631.53x = 452,829.11
  5. Step 5: Solve for x
    x = 452,829.11/631.53
  6. Step 6: Final answer
    x = 717.03

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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.