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Finding the Fourth Proportional to 631.94, 947.65 and 372

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Solution

The fourth proportional to 631.94, 947.65 and 372 is: 557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.94 : 947.65 = 372 : x
  2. Step 2: Convert to fraction form
    631.94/947.65 = 372/x
  3. Step 3: Cross multiply
    631.94x = 947.65 × 372
  4. Step 4: Simplify right side
    631.94x = 352,525.80
  5. Step 5: Solve for x
    x = 352,525.80/631.94
  6. Step 6: Final answer
    x = 557.85

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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.