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Finding the Fourth Proportional to 1,150.28, 1,587.36 and 626.32

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Solution

The fourth proportional to 1,150.28, 1,587.36 and 626.32 is: 864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.28 : 1,587.36 = 626.32 : x
  2. Step 2: Convert to fraction form
    1,150.28/1,587.36 = 626.32/x
  3. Step 3: Cross multiply
    1,150.28x = 1,587.36 × 626.32
  4. Step 4: Simplify right side
    1,150.28x = 994,195.32
  5. Step 5: Solve for x
    x = 994,195.32/1,150.28
  6. Step 6: Final answer
    x = 864.31

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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.