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Finding the Fourth Proportional to 631.75, 946.71 and 357.26

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Solution

The fourth proportional to 631.75, 946.71 and 357.26 is: 535.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.75 : 946.71 = 357.26 : x
  2. Step 2: Convert to fraction form
    631.75/946.71 = 357.26/x
  3. Step 3: Cross multiply
    631.75x = 946.71 × 357.26
  4. Step 4: Simplify right side
    631.75x = 338,221.61
  5. Step 5: Solve for x
    x = 338,221.61/631.75
  6. Step 6: Final answer
    x = 535.37

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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.