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Finding the Fourth Proportional to 897.25, 1,238.75 and 587.29

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Solution

The fourth proportional to 897.25, 1,238.75 and 587.29 is: 810.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.25 : 1,238.75 = 587.29 : x
  2. Step 2: Convert to fraction form
    897.25/1,238.75 = 587.29/x
  3. Step 3: Cross multiply
    897.25x = 1,238.75 × 587.29
  4. Step 4: Simplify right side
    897.25x = 727,505.49
  5. Step 5: Solve for x
    x = 727,505.49/897.25
  6. Step 6: Final answer
    x = 810.82

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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.