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Finding the Fourth Proportional to 507.07, 698.85 and 340.82

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Solution

The fourth proportional to 507.07, 698.85 and 340.82 is: 469.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    507.07 : 698.85 = 340.82 : x
  2. Step 2: Convert to fraction form
    507.07/698.85 = 340.82/x
  3. Step 3: Cross multiply
    507.07x = 698.85 × 340.82
  4. Step 4: Simplify right side
    507.07x = 238,178.56
  5. Step 5: Solve for x
    x = 238,178.56/507.07
  6. Step 6: Final answer
    x = 469.72

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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.