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Finding the Fourth Proportional to 571.01, 787.19 and 374.18

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Solution

The fourth proportional to 571.01, 787.19 and 374.18 is: 515.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.01 : 787.19 = 374.18 : x
  2. Step 2: Convert to fraction form
    571.01/787.19 = 374.18/x
  3. Step 3: Cross multiply
    571.01x = 787.19 × 374.18
  4. Step 4: Simplify right side
    571.01x = 294,544.95
  5. Step 5: Solve for x
    x = 294,544.95/571.01
  6. Step 6: Final answer
    x = 515.84

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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.