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Finding the Fourth Proportional to 340.59, 507.94 and 289.56

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Solution

The fourth proportional to 340.59, 507.94 and 289.56 is: 431.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.59 : 507.94 = 289.56 : x
  2. Step 2: Convert to fraction form
    340.59/507.94 = 289.56/x
  3. Step 3: Cross multiply
    340.59x = 507.94 × 289.56
  4. Step 4: Simplify right side
    340.59x = 147,079.11
  5. Step 5: Solve for x
    x = 147,079.11/340.59
  6. Step 6: Final answer
    x = 431.84

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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.