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Finding the Fourth Proportional to 1,487.67, 2,227.80 and 902.94

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Solution

The fourth proportional to 1,487.67, 2,227.80 and 902.94 is: 1,352.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.67 : 2,227.80 = 902.94 : x
  2. Step 2: Convert to fraction form
    1,487.67/2,227.80 = 902.94/x
  3. Step 3: Cross multiply
    1,487.67x = 2,227.80 × 902.94
  4. Step 4: Simplify right side
    1,487.67x = 2,011,569.73
  5. Step 5: Solve for x
    x = 2,011,569.73/1,487.67
  6. Step 6: Final answer
    x = 1,352.16

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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.