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Finding the Fourth Proportional to 1,063.19, 1,467.23 and 643.62

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Solution

The fourth proportional to 1,063.19, 1,467.23 and 643.62 is: 888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.19 : 1,467.23 = 643.62 : x
  2. Step 2: Convert to fraction form
    1,063.19/1,467.23 = 643.62/x
  3. Step 3: Cross multiply
    1,063.19x = 1,467.23 × 643.62
  4. Step 4: Simplify right side
    1,063.19x = 944,331.24
  5. Step 5: Solve for x
    x = 944,331.24/1,063.19
  6. Step 6: Final answer
    x = 888.21

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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.