Home / 1,528.90-2,290.31-706.04

Finding the Fourth Proportional to 1,528.90, 2,290.31 and 706.04

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Solution

The fourth proportional to 1,528.90, 2,290.31 and 706.04 is: 1,057.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,528.90 : 2,290.31 = 706.04 : x
  2. Step 2: Convert to fraction form
    1,528.90/2,290.31 = 706.04/x
  3. Step 3: Cross multiply
    1,528.90x = 2,290.31 × 706.04
  4. Step 4: Simplify right side
    1,528.90x = 1,617,046.73
  5. Step 5: Solve for x
    x = 1,617,046.73/1,528.90
  6. Step 6: Final answer
    x = 1,057.66

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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.