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Finding the Fourth Proportional to 607.05, 837.43 and 407.99

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Solution

The fourth proportional to 607.05, 837.43 and 407.99 is: 562.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.05 : 837.43 = 407.99 : x
  2. Step 2: Convert to fraction form
    607.05/837.43 = 407.99/x
  3. Step 3: Cross multiply
    607.05x = 837.43 × 407.99
  4. Step 4: Simplify right side
    607.05x = 341,664.14
  5. Step 5: Solve for x
    x = 341,664.14/607.05
  6. Step 6: Final answer
    x = 562.83

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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.