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Finding the Fourth Proportional to 640.50, 956.40 and 599.22

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Solution

The fourth proportional to 640.50, 956.40 and 599.22 is: 894.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    640.50 : 956.40 = 599.22 : x
  2. Step 2: Convert to fraction form
    640.50/956.40 = 599.22/x
  3. Step 3: Cross multiply
    640.50x = 956.40 × 599.22
  4. Step 4: Simplify right side
    640.50x = 573,094.01
  5. Step 5: Solve for x
    x = 573,094.01/640.50
  6. Step 6: Final answer
    x = 894.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.