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Finding the Fourth Proportional to 1,563.40, 2,345.71 and 832.58

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Solution

The fourth proportional to 1,563.40, 2,345.71 and 832.58 is: 1,249.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,563.40 : 2,345.71 = 832.58 : x
  2. Step 2: Convert to fraction form
    1,563.40/2,345.71 = 832.58/x
  3. Step 3: Cross multiply
    1,563.40x = 2,345.71 × 832.58
  4. Step 4: Simplify right side
    1,563.40x = 1,952,987.78
  5. Step 5: Solve for x
    x = 1,952,987.78/1,563.40
  6. Step 6: Final answer
    x = 1,249.19

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1.5x scale

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.