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Finding the Fourth Proportional to 630.24, 868.32 and 443.04

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Solution

The fourth proportional to 630.24, 868.32 and 443.04 is: 610.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.24 : 868.32 = 443.04 : x
  2. Step 2: Convert to fraction form
    630.24/868.32 = 443.04/x
  3. Step 3: Cross multiply
    630.24x = 868.32 × 443.04
  4. Step 4: Simplify right side
    630.24x = 384,700.49
  5. Step 5: Solve for x
    x = 384,700.49/630.24
  6. Step 6: Final answer
    x = 610.40

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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.