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Finding the Fourth Proportional to 340.68, 469.08 and 296.76

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Solution

The fourth proportional to 340.68, 469.08 and 296.76 is: 408.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.68 : 469.08 = 296.76 : x
  2. Step 2: Convert to fraction form
    340.68/469.08 = 296.76/x
  3. Step 3: Cross multiply
    340.68x = 469.08 × 296.76
  4. Step 4: Simplify right side
    340.68x = 139,204.18
  5. Step 5: Solve for x
    x = 139,204.18/340.68
  6. Step 6: Final answer
    x = 408.61

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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.