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Finding the Fourth Proportional to 1,178.25, 1,625.56 and 735.99

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Solution

The fourth proportional to 1,178.25, 1,625.56 and 735.99 is: 1,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.25 : 1,625.56 = 735.99 : x
  2. Step 2: Convert to fraction form
    1,178.25/1,625.56 = 735.99/x
  3. Step 3: Cross multiply
    1,178.25x = 1,625.56 × 735.99
  4. Step 4: Simplify right side
    1,178.25x = 1,196,395.90
  5. Step 5: Solve for x
    x = 1,196,395.90/1,178.25
  6. Step 6: Final answer
    x = 1,015.40

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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.