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Finding the Fourth Proportional to 1,720.51, 2,580.62 and 625.12

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Solution

The fourth proportional to 1,720.51, 2,580.62 and 625.12 is: 937.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.51 : 2,580.62 = 625.12 : x
  2. Step 2: Convert to fraction form
    1,720.51/2,580.62 = 625.12/x
  3. Step 3: Cross multiply
    1,720.51x = 2,580.62 × 625.12
  4. Step 4: Simplify right side
    1,720.51x = 1,613,184.27
  5. Step 5: Solve for x
    x = 1,613,184.27/1,720.51
  6. Step 6: Final answer
    x = 937.62

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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.