Home / 1,276.90-1,913.52-546.28

Finding the Fourth Proportional to 1,276.90, 1,913.52 and 546.28

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Solution

The fourth proportional to 1,276.90, 1,913.52 and 546.28 is: 818.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.90 : 1,913.52 = 546.28 : x
  2. Step 2: Convert to fraction form
    1,276.90/1,913.52 = 546.28/x
  3. Step 3: Cross multiply
    1,276.90x = 1,913.52 × 546.28
  4. Step 4: Simplify right side
    1,276.90x = 1,045,317.71
  5. Step 5: Solve for x
    x = 1,045,317.71/1,276.90
  6. Step 6: Final answer
    x = 818.64

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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.