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Finding the Fourth Proportional to 630.50, 946.53 and 425.97

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Solution

The fourth proportional to 630.50, 946.53 and 425.97 is: 639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.50 : 946.53 = 425.97 : x
  2. Step 2: Convert to fraction form
    630.50/946.53 = 425.97/x
  3. Step 3: Cross multiply
    630.50x = 946.53 × 425.97
  4. Step 4: Simplify right side
    630.50x = 403,193.38
  5. Step 5: Solve for x
    x = 403,193.38/630.50
  6. Step 6: Final answer
    x = 639.49

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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.