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Finding the Fourth Proportional to 637.40, 956.10 and 204.56

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Solution

The fourth proportional to 637.40, 956.10 and 204.56 is: 306.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.40 : 956.10 = 204.56 : x
  2. Step 2: Convert to fraction form
    637.40/956.10 = 204.56/x
  3. Step 3: Cross multiply
    637.40x = 956.10 × 204.56
  4. Step 4: Simplify right side
    637.40x = 195,579.82
  5. Step 5: Solve for x
    x = 195,579.82/637.40
  6. Step 6: Final answer
    x = 306.84

Related Problems

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Half scale
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Double scale
Find fourth proportional to 638.40, 957.60 and 205.56
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.