Home / 1,385.17-2,077.53-460.74

Finding the Fourth Proportional to 1,385.17, 2,077.53 and 460.74

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Solution

The fourth proportional to 1,385.17, 2,077.53 and 460.74 is: 691.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.17 : 2,077.53 = 460.74 : x
  2. Step 2: Convert to fraction form
    1,385.17/2,077.53 = 460.74/x
  3. Step 3: Cross multiply
    1,385.17x = 2,077.53 × 460.74
  4. Step 4: Simplify right side
    1,385.17x = 957,201.17
  5. Step 5: Solve for x
    x = 957,201.17/1,385.17
  6. Step 6: Final answer
    x = 691.04

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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.