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Finding the Fourth Proportional to 637.12, 955.54 and 204.36

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Solution

The fourth proportional to 637.12, 955.54 and 204.36 is: 306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.12 : 955.54 = 204.36 : x
  2. Step 2: Convert to fraction form
    637.12/955.54 = 204.36/x
  3. Step 3: Cross multiply
    637.12x = 955.54 × 204.36
  4. Step 4: Simplify right side
    637.12x = 195,274.15
  5. Step 5: Solve for x
    x = 195,274.15/637.12
  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 638.12, 957.04 and 205.36
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.