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Finding the Fourth Proportional to 320.27, 480.51 and 146.93

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Solution

The fourth proportional to 320.27, 480.51 and 146.93 is: 220.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.27 : 480.51 = 146.93 : x
  2. Step 2: Convert to fraction form
    320.27/480.51 = 146.93/x
  3. Step 3: Cross multiply
    320.27x = 480.51 × 146.93
  4. Step 4: Simplify right side
    320.27x = 70,598.93
  5. Step 5: Solve for x
    x = 70,598.93/320.27
  6. Step 6: Final answer
    x = 220.44

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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.