Home / 1,153.19-1,591.44-629.26

Finding the Fourth Proportional to 1,153.19, 1,591.44 and 629.26

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Solution

The fourth proportional to 1,153.19, 1,591.44 and 629.26 is: 868.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.19 : 1,591.44 = 629.26 : x
  2. Step 2: Convert to fraction form
    1,153.19/1,591.44 = 629.26/x
  3. Step 3: Cross multiply
    1,153.19x = 1,591.44 × 629.26
  4. Step 4: Simplify right side
    1,153.19x = 1,001,429.53
  5. Step 5: Solve for x
    x = 1,001,429.53/1,153.19
  6. Step 6: Final answer
    x = 868.40

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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.