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Finding the Fourth Proportional to 607.31, 837.87 and 358.55

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Solution

The fourth proportional to 607.31, 837.87 and 358.55 is: 494.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.31 : 837.87 = 358.55 : x
  2. Step 2: Convert to fraction form
    607.31/837.87 = 358.55/x
  3. Step 3: Cross multiply
    607.31x = 837.87 × 358.55
  4. Step 4: Simplify right side
    607.31x = 300,414.10
  5. Step 5: Solve for x
    x = 300,414.10/607.31
  6. Step 6: Final answer
    x = 494.67

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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.