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Finding the Fourth Proportional to 604.50, 907.15 and 330.78

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Solution

The fourth proportional to 604.50, 907.15 and 330.78 is: 496.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.50 : 907.15 = 330.78 : x
  2. Step 2: Convert to fraction form
    604.50/907.15 = 330.78/x
  3. Step 3: Cross multiply
    604.50x = 907.15 × 330.78
  4. Step 4: Simplify right side
    604.50x = 300,070.27
  5. Step 5: Solve for x
    x = 300,070.27/604.50
  6. Step 6: Final answer
    x = 496.39

Related Problems

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.