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Finding the Fourth Proportional to 1,192.60, 1,784.30 and 730.28

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Solution

The fourth proportional to 1,192.60, 1,784.30 and 730.28 is: 1,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.60 : 1,784.30 = 730.28 : x
  2. Step 2: Convert to fraction form
    1,192.60/1,784.30 = 730.28/x
  3. Step 3: Cross multiply
    1,192.60x = 1,784.30 × 730.28
  4. Step 4: Simplify right side
    1,192.60x = 1,303,038.60
  5. Step 5: Solve for x
    x = 1,303,038.60/1,192.60
  6. Step 6: Final answer
    x = 1,092.60

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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.