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Finding the Fourth Proportional to 637.20, 955.53 and 204.39

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Solution

The fourth proportional to 637.20, 955.53 and 204.39 is: 306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.20 : 955.53 = 204.39 : x
  2. Step 2: Convert to fraction form
    637.20/955.53 = 204.39/x
  3. Step 3: Cross multiply
    637.20x = 955.53 × 204.39
  4. Step 4: Simplify right side
    637.20x = 195,300.78
  5. Step 5: Solve for x
    x = 195,300.78/637.20
  6. Step 6: Final answer
    x = 306.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 638.20, 957.03 and 205.39
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.