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Finding the Fourth Proportional to 968.10, 1,452.19 and 390.98

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Solution

The fourth proportional to 968.10, 1,452.19 and 390.98 is: 586.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.10 : 1,452.19 = 390.98 : x
  2. Step 2: Convert to fraction form
    968.10/1,452.19 = 390.98/x
  3. Step 3: Cross multiply
    968.10x = 1,452.19 × 390.98
  4. Step 4: Simplify right side
    968.10x = 567,777.25
  5. Step 5: Solve for x
    x = 567,777.25/968.10
  6. Step 6: Final answer
    x = 586.49

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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.