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Finding the Fourth Proportional to 1,259.02, 1,737.41 and 699.47

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Solution

The fourth proportional to 1,259.02, 1,737.41 and 699.47 is: 965.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.02 : 1,737.41 = 699.47 : x
  2. Step 2: Convert to fraction form
    1,259.02/1,737.41 = 699.47/x
  3. Step 3: Cross multiply
    1,259.02x = 1,737.41 × 699.47
  4. Step 4: Simplify right side
    1,259.02x = 1,215,261.83
  5. Step 5: Solve for x
    x = 1,215,261.83/1,259.02
  6. Step 6: Final answer
    x = 965.25

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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.