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Finding the Fourth Proportional to 896.71, 1,237.71 and 581.98

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Solution

The fourth proportional to 896.71, 1,237.71 and 581.98 is: 803.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.71 : 1,237.71 = 581.98 : x
  2. Step 2: Convert to fraction form
    896.71/1,237.71 = 581.98/x
  3. Step 3: Cross multiply
    896.71x = 1,237.71 × 581.98
  4. Step 4: Simplify right side
    896.71x = 720,322.47
  5. Step 5: Solve for x
    x = 720,322.47/896.71
  6. Step 6: Final answer
    x = 803.29

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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.