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Finding the Fourth Proportional to 674.76, 931.05 and 441.75

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Solution

The fourth proportional to 674.76, 931.05 and 441.75 is: 609.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.76 : 931.05 = 441.75 : x
  2. Step 2: Convert to fraction form
    674.76/931.05 = 441.75/x
  3. Step 3: Cross multiply
    674.76x = 931.05 × 441.75
  4. Step 4: Simplify right side
    674.76x = 411,291.34
  5. Step 5: Solve for x
    x = 411,291.34/674.76
  6. Step 6: Final answer
    x = 609.54

Related Problems

Find fourth proportional to 337.38, 465.53 and 220.88
Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.