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Finding the Fourth Proportional to 901.14, 1,243.18 and 606.70

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Solution

The fourth proportional to 901.14, 1,243.18 and 606.70 is: 836.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.14 : 1,243.18 = 606.70 : x
  2. Step 2: Convert to fraction form
    901.14/1,243.18 = 606.70/x
  3. Step 3: Cross multiply
    901.14x = 1,243.18 × 606.70
  4. Step 4: Simplify right side
    901.14x = 754,237.31
  5. Step 5: Solve for x
    x = 754,237.31/901.14
  6. Step 6: Final answer
    x = 836.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.