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Finding the Fourth Proportional to 1,043.19, 1,439.56 and 601.09

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Solution

The fourth proportional to 1,043.19, 1,439.56 and 601.09 is: 829.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,043.19 : 1,439.56 = 601.09 : x
  2. Step 2: Convert to fraction form
    1,043.19/1,439.56 = 601.09/x
  3. Step 3: Cross multiply
    1,043.19x = 1,439.56 × 601.09
  4. Step 4: Simplify right side
    1,043.19x = 865,305.12
  5. Step 5: Solve for x
    x = 865,305.12/1,043.19
  6. Step 6: Final answer
    x = 829.48

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Half scale
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Double scale
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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.