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Finding the Fourth Proportional to 983.72, 1,475.61 and 334.37

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Solution

The fourth proportional to 983.72, 1,475.61 and 334.37 is: 501.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    983.72 : 1,475.61 = 334.37 : x
  2. Step 2: Convert to fraction form
    983.72/1,475.61 = 334.37/x
  3. Step 3: Cross multiply
    983.72x = 1,475.61 × 334.37
  4. Step 4: Simplify right side
    983.72x = 493,392.34
  5. Step 5: Solve for x
    x = 493,392.34/983.72
  6. Step 6: Final answer
    x = 501.56

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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.