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Finding the Fourth Proportional to 320.04, 478.55 and 228.45

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Solution

The fourth proportional to 320.04, 478.55 and 228.45 is: 341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.04 : 478.55 = 228.45 : x
  2. Step 2: Convert to fraction form
    320.04/478.55 = 228.45/x
  3. Step 3: Cross multiply
    320.04x = 478.55 × 228.45
  4. Step 4: Simplify right side
    320.04x = 109,324.75
  5. Step 5: Solve for x
    x = 109,324.75/320.04
  6. Step 6: Final answer
    x = 341.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.