Home / 1,530.25-2,295.55-489.89

Finding the Fourth Proportional to 1,530.25, 2,295.55 and 489.89

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Solution

The fourth proportional to 1,530.25, 2,295.55 and 489.89 is: 734.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.25 : 2,295.55 = 489.89 : x
  2. Step 2: Convert to fraction form
    1,530.25/2,295.55 = 489.89/x
  3. Step 3: Cross multiply
    1,530.25x = 2,295.55 × 489.89
  4. Step 4: Simplify right side
    1,530.25x = 1,124,563.60
  5. Step 5: Solve for x
    x = 1,124,563.60/1,530.25
  6. Step 6: Final answer
    x = 734.89

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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.