Home / 1,070.11-1,605.27-290.16

Finding the Fourth Proportional to 1,070.11, 1,605.27 and 290.16

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Solution

The fourth proportional to 1,070.11, 1,605.27 and 290.16 is: 435.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070.11 : 1,605.27 = 290.16 : x
  2. Step 2: Convert to fraction form
    1,070.11/1,605.27 = 290.16/x
  3. Step 3: Cross multiply
    1,070.11x = 1,605.27 × 290.16
  4. Step 4: Simplify right side
    1,070.11x = 465,780.08
  5. Step 5: Solve for x
    x = 465,780.08/1,070.11
  6. Step 6: Final answer
    x = 435.26

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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.