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Finding the Fourth Proportional to 672.78, 932.70 and 637.65

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Solution

The fourth proportional to 672.78, 932.70 and 637.65 is: 884.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.78 : 932.70 = 637.65 : x
  2. Step 2: Convert to fraction form
    672.78/932.70 = 637.65/x
  3. Step 3: Cross multiply
    672.78x = 932.70 × 637.65
  4. Step 4: Simplify right side
    672.78x = 594,736.16
  5. Step 5: Solve for x
    x = 594,736.16/672.78
  6. Step 6: Final answer
    x = 884.00

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.