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Finding the Fourth Proportional to 374.61, 559.86 and 345.42

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Solution

The fourth proportional to 374.61, 559.86 and 345.42 is: 516.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.61 : 559.86 = 345.42 : x
  2. Step 2: Convert to fraction form
    374.61/559.86 = 345.42/x
  3. Step 3: Cross multiply
    374.61x = 559.86 × 345.42
  4. Step 4: Simplify right side
    374.61x = 193,386.84
  5. Step 5: Solve for x
    x = 193,386.84/374.61
  6. Step 6: Final answer
    x = 516.24

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.