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Finding the Fourth Proportional to 570, 786.60 and 373.84

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Solution

The fourth proportional to 570, 786.60 and 373.84 is: 515.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    570 : 786.60 = 373.84 : x
  2. Step 2: Convert to fraction form
    570/786.60 = 373.84/x
  3. Step 3: Cross multiply
    570x = 786.60 × 373.84
  4. Step 4: Simplify right side
    570x = 294,062.54
  5. Step 5: Solve for x
    x = 294,062.54/570
  6. Step 6: Final answer
    x = 515.90

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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.