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Finding the Fourth Proportional to 633.49, 950.52 and 390.49

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Solution

The fourth proportional to 633.49, 950.52 and 390.49 is: 585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    633.49 : 950.52 = 390.49 : x
  2. Step 2: Convert to fraction form
    633.49/950.52 = 390.49/x
  3. Step 3: Cross multiply
    633.49x = 950.52 × 390.49
  4. Step 4: Simplify right side
    633.49x = 371,168.55
  5. Step 5: Solve for x
    x = 371,168.55/633.49
  6. Step 6: Final answer
    x = 585.91

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.