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Finding the Fourth Proportional to 1,529.81, 2,294.52 and 489.92

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Solution

The fourth proportional to 1,529.81, 2,294.52 and 489.92 is: 734.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,529.81 : 2,294.52 = 489.92 : x
  2. Step 2: Convert to fraction form
    1,529.81/2,294.52 = 489.92/x
  3. Step 3: Cross multiply
    1,529.81x = 2,294.52 × 489.92
  4. Step 4: Simplify right side
    1,529.81x = 1,124,131.24
  5. Step 5: Solve for x
    x = 1,124,131.24/1,529.81
  6. Step 6: Final answer
    x = 734.82

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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.