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Finding the Fourth Proportional to 1,476.89, 2,214.87 and 489.53

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Solution

The fourth proportional to 1,476.89, 2,214.87 and 489.53 is: 734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,476.89 : 2,214.87 = 489.53 : x
  2. Step 2: Convert to fraction form
    1,476.89/2,214.87 = 489.53/x
  3. Step 3: Cross multiply
    1,476.89x = 2,214.87 × 489.53
  4. Step 4: Simplify right side
    1,476.89x = 1,084,234.24
  5. Step 5: Solve for x
    x = 1,084,234.24/1,476.89
  6. Step 6: Final answer
    x = 734.14

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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.