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Finding the Fourth Proportional to 894.32, 1,232.50 and 645.22

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Solution

The fourth proportional to 894.32, 1,232.50 and 645.22 is: 889.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    894.32 : 1,232.50 = 645.22 : x
  2. Step 2: Convert to fraction form
    894.32/1,232.50 = 645.22/x
  3. Step 3: Cross multiply
    894.32x = 1,232.50 × 645.22
  4. Step 4: Simplify right side
    894.32x = 795,233.65
  5. Step 5: Solve for x
    x = 795,233.65/894.32
  6. Step 6: Final answer
    x = 889.20

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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.