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Finding the Fourth Proportional to 403.68, 603.20 and 352.32

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Solution

The fourth proportional to 403.68, 603.20 and 352.32 is: 526.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.68 : 603.20 = 352.32 : x
  2. Step 2: Convert to fraction form
    403.68/603.20 = 352.32/x
  3. Step 3: Cross multiply
    403.68x = 603.20 × 352.32
  4. Step 4: Simplify right side
    403.68x = 212,519.42
  5. Step 5: Solve for x
    x = 212,519.42/403.68
  6. Step 6: Final answer
    x = 526.46

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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.