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Finding the Fourth Proportional to 797.72, 1,101.51 and 756.95

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Solution

The fourth proportional to 797.72, 1,101.51 and 756.95 is: 1,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.72 : 1,101.51 = 756.95 : x
  2. Step 2: Convert to fraction form
    797.72/1,101.51 = 756.95/x
  3. Step 3: Cross multiply
    797.72x = 1,101.51 × 756.95
  4. Step 4: Simplify right side
    797.72x = 833,787.99
  5. Step 5: Solve for x
    x = 833,787.99/797.72
  6. Step 6: Final answer
    x = 1,045.21

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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.