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Finding the Fourth Proportional to 607.55, 838.49 and 345.65

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Solution

The fourth proportional to 607.55, 838.49 and 345.65 is: 477.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.55 : 838.49 = 345.65 : x
  2. Step 2: Convert to fraction form
    607.55/838.49 = 345.65/x
  3. Step 3: Cross multiply
    607.55x = 838.49 × 345.65
  4. Step 4: Simplify right side
    607.55x = 289,818.15
  5. Step 5: Solve for x
    x = 289,818.15/607.55
  6. Step 6: Final answer
    x = 477.03

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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.