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Finding the Fourth Proportional to 1,259.13, 1,737.51 and 699.58

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Solution

The fourth proportional to 1,259.13, 1,737.51 and 699.58 is: 965.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.13 : 1,737.51 = 699.58 : x
  2. Step 2: Convert to fraction form
    1,259.13/1,737.51 = 699.58/x
  3. Step 3: Cross multiply
    1,259.13x = 1,737.51 × 699.58
  4. Step 4: Simplify right side
    1,259.13x = 1,215,527.25
  5. Step 5: Solve for x
    x = 1,215,527.25/1,259.13
  6. Step 6: Final answer
    x = 965.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.