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Finding the Fourth Proportional to 619.37, 854.79 and 370.76

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Solution

The fourth proportional to 619.37, 854.79 and 370.76 is: 511.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.37 : 854.79 = 370.76 : x
  2. Step 2: Convert to fraction form
    619.37/854.79 = 370.76/x
  3. Step 3: Cross multiply
    619.37x = 854.79 × 370.76
  4. Step 4: Simplify right side
    619.37x = 316,921.94
  5. Step 5: Solve for x
    x = 316,921.94/619.37
  6. Step 6: Final answer
    x = 511.68

Related Problems

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1.5x scale

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.