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Finding the Fourth Proportional to 937.97, 1,406.68 and 288.76

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Solution

The fourth proportional to 937.97, 1,406.68 and 288.76 is: 433.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.97 : 1,406.68 = 288.76 : x
  2. Step 2: Convert to fraction form
    937.97/1,406.68 = 288.76/x
  3. Step 3: Cross multiply
    937.97x = 1,406.68 × 288.76
  4. Step 4: Simplify right side
    937.97x = 406,192.92
  5. Step 5: Solve for x
    x = 406,192.92/937.97
  6. Step 6: Final answer
    x = 433.06

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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.