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Finding the Fourth Proportional to 401.58, 601.59 and 320.19

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Solution

The fourth proportional to 401.58, 601.59 and 320.19 is: 479.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.58 : 601.59 = 320.19 : x
  2. Step 2: Convert to fraction form
    401.58/601.59 = 320.19/x
  3. Step 3: Cross multiply
    401.58x = 601.59 × 320.19
  4. Step 4: Simplify right side
    401.58x = 192,623.10
  5. Step 5: Solve for x
    x = 192,623.10/401.58
  6. Step 6: Final answer
    x = 479.66

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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.