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Finding the Fourth Proportional to 571.06, 787.80 and 349.93

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Solution

The fourth proportional to 571.06, 787.80 and 349.93 is: 482.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.06 : 787.80 = 349.93 : x
  2. Step 2: Convert to fraction form
    571.06/787.80 = 349.93/x
  3. Step 3: Cross multiply
    571.06x = 787.80 × 349.93
  4. Step 4: Simplify right side
    571.06x = 275,674.85
  5. Step 5: Solve for x
    x = 275,674.85/571.06
  6. Step 6: Final answer
    x = 482.74

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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.