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Finding the Fourth Proportional to 726.17, 1,088.43 and 292.82

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Solution

The fourth proportional to 726.17, 1,088.43 and 292.82 is: 438.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.17 : 1,088.43 = 292.82 : x
  2. Step 2: Convert to fraction form
    726.17/1,088.43 = 292.82/x
  3. Step 3: Cross multiply
    726.17x = 1,088.43 × 292.82
  4. Step 4: Simplify right side
    726.17x = 318,714.07
  5. Step 5: Solve for x
    x = 318,714.07/726.17
  6. Step 6: Final answer
    x = 438.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.