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Finding the Fourth Proportional to 352.10, 526.30 and 321.12

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Solution

The fourth proportional to 352.10, 526.30 and 321.12 is: 479.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    352.10 : 526.30 = 321.12 : x
  2. Step 2: Convert to fraction form
    352.10/526.30 = 321.12/x
  3. Step 3: Cross multiply
    352.10x = 526.30 × 321.12
  4. Step 4: Simplify right side
    352.10x = 169,005.46
  5. Step 5: Solve for x
    x = 169,005.46/352.10
  6. Step 6: Final answer
    x = 479.99

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.