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Finding the Fourth Proportional to 672.71, 925.81 and 569.15

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Solution

The fourth proportional to 672.71, 925.81 and 569.15 is: 783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.71 : 925.81 = 569.15 : x
  2. Step 2: Convert to fraction form
    672.71/925.81 = 569.15/x
  3. Step 3: Cross multiply
    672.71x = 925.81 × 569.15
  4. Step 4: Simplify right side
    672.71x = 526,925.65
  5. Step 5: Solve for x
    x = 526,925.65/672.71
  6. Step 6: Final answer
    x = 783.29

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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.