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Finding the Fourth Proportional to 374.72, 520.70 and 370.76

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Solution

The fourth proportional to 374.72, 520.70 and 370.76 is: 515.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.72 : 520.70 = 370.76 : x
  2. Step 2: Convert to fraction form
    374.72/520.70 = 370.76/x
  3. Step 3: Cross multiply
    374.72x = 520.70 × 370.76
  4. Step 4: Simplify right side
    374.72x = 193,054.73
  5. Step 5: Solve for x
    x = 193,054.73/374.72
  6. Step 6: Final answer
    x = 515.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.