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Finding the Fourth Proportional to 952.25, 1,312.14 and 672.80

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Solution

The fourth proportional to 952.25, 1,312.14 and 672.80 is: 927.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.25 : 1,312.14 = 672.80 : x
  2. Step 2: Convert to fraction form
    952.25/1,312.14 = 672.80/x
  3. Step 3: Cross multiply
    952.25x = 1,312.14 × 672.80
  4. Step 4: Simplify right side
    952.25x = 882,801.23
  5. Step 5: Solve for x
    x = 882,801.23/952.25
  6. Step 6: Final answer
    x = 927.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.