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Finding the Fourth Proportional to 1,230.60, 1,699.74 and 1,159.32

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Solution

The fourth proportional to 1,230.60, 1,699.74 and 1,159.32 is: 1,601.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230.60 : 1,699.74 = 1,159.32 : x
  2. Step 2: Convert to fraction form
    1,230.60/1,699.74 = 1,159.32/x
  3. Step 3: Cross multiply
    1,230.60x = 1,699.74 × 1,159.32
  4. Step 4: Simplify right side
    1,230.60x = 1,970,542.58
  5. Step 5: Solve for x
    x = 1,970,542.58/1,230.60
  6. Step 6: Final answer
    x = 1,601.29

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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.