Home / 1,276.10-1,913.51-454.26

Finding the Fourth Proportional to 1,276.10, 1,913.51 and 454.26

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Solution

The fourth proportional to 1,276.10, 1,913.51 and 454.26 is: 681.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.10 : 1,913.51 = 454.26 : x
  2. Step 2: Convert to fraction form
    1,276.10/1,913.51 = 454.26/x
  3. Step 3: Cross multiply
    1,276.10x = 1,913.51 × 454.26
  4. Step 4: Simplify right side
    1,276.10x = 869,228.78
  5. Step 5: Solve for x
    x = 869,228.78/1,276.10
  6. Step 6: Final answer
    x = 681.16

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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.