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Finding the Fourth Proportional to 1,411.75, 2,116.21 and 590.48

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Solution

The fourth proportional to 1,411.75, 2,116.21 and 590.48 is: 885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.75 : 2,116.21 = 590.48 : x
  2. Step 2: Convert to fraction form
    1,411.75/2,116.21 = 590.48/x
  3. Step 3: Cross multiply
    1,411.75x = 2,116.21 × 590.48
  4. Step 4: Simplify right side
    1,411.75x = 1,249,579.68
  5. Step 5: Solve for x
    x = 1,249,579.68/1,411.75
  6. Step 6: Final answer
    x = 885.13

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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.