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Finding the Fourth Proportional to 630.87, 946.37 and 357.49

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Solution

The fourth proportional to 630.87, 946.37 and 357.49 is: 536.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.87 : 946.37 = 357.49 : x
  2. Step 2: Convert to fraction form
    630.87/946.37 = 357.49/x
  3. Step 3: Cross multiply
    630.87x = 946.37 × 357.49
  4. Step 4: Simplify right side
    630.87x = 338,316.02
  5. Step 5: Solve for x
    x = 338,316.02/630.87
  6. Step 6: Final answer
    x = 536.27

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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.