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Finding the Fourth Proportional to 607.10, 837.78 and 345.09

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Solution

The fourth proportional to 607.10, 837.78 and 345.09 is: 476.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.10 : 837.78 = 345.09 : x
  2. Step 2: Convert to fraction form
    607.10/837.78 = 345.09/x
  3. Step 3: Cross multiply
    607.10x = 837.78 × 345.09
  4. Step 4: Simplify right side
    607.10x = 289,111.35
  5. Step 5: Solve for x
    x = 289,111.35/607.10
  6. Step 6: Final answer
    x = 476.22

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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.