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Finding the Fourth Proportional to 793.84, 1,095.76 and 557.58

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Solution

The fourth proportional to 793.84, 1,095.76 and 557.58 is: 769.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.84 : 1,095.76 = 557.58 : x
  2. Step 2: Convert to fraction form
    793.84/1,095.76 = 557.58/x
  3. Step 3: Cross multiply
    793.84x = 1,095.76 × 557.58
  4. Step 4: Simplify right side
    793.84x = 610,973.86
  5. Step 5: Solve for x
    x = 610,973.86/793.84
  6. Step 6: Final answer
    x = 769.64

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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.