Home / 1,620.66-2,431.08-524.70

Finding the Fourth Proportional to 1,620.66, 2,431.08 and 524.70

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Solution

The fourth proportional to 1,620.66, 2,431.08 and 524.70 is: 787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.66 : 2,431.08 = 524.70 : x
  2. Step 2: Convert to fraction form
    1,620.66/2,431.08 = 524.70/x
  3. Step 3: Cross multiply
    1,620.66x = 2,431.08 × 524.70
  4. Step 4: Simplify right side
    1,620.66x = 1,275,587.68
  5. Step 5: Solve for x
    x = 1,275,587.68/1,620.66
  6. Step 6: Final answer
    x = 787.08

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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.