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Finding the Fourth Proportional to 340.18, 469.60 and 228.32

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Solution

The fourth proportional to 340.18, 469.60 and 228.32 is: 315.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.18 : 469.60 = 228.32 : x
  2. Step 2: Convert to fraction form
    340.18/469.60 = 228.32/x
  3. Step 3: Cross multiply
    340.18x = 469.60 × 228.32
  4. Step 4: Simplify right side
    340.18x = 107,217.91
  5. Step 5: Solve for x
    x = 107,217.91/340.18
  6. Step 6: Final answer
    x = 315.18

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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.