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Finding the Fourth Proportional to 630.67, 946.31 and 475.51

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Solution

The fourth proportional to 630.67, 946.31 and 475.51 is: 713.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.67 : 946.31 = 475.51 : x
  2. Step 2: Convert to fraction form
    630.67/946.31 = 475.51/x
  3. Step 3: Cross multiply
    630.67x = 946.31 × 475.51
  4. Step 4: Simplify right side
    630.67x = 449,979.87
  5. Step 5: Solve for x
    x = 449,979.87/630.67
  6. Step 6: Final answer
    x = 713.49

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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.