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Finding the Fourth Proportional to 403.36, 555.32 and 382.84

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Solution

The fourth proportional to 403.36, 555.32 and 382.84 is: 527.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.36 : 555.32 = 382.84 : x
  2. Step 2: Convert to fraction form
    403.36/555.32 = 382.84/x
  3. Step 3: Cross multiply
    403.36x = 555.32 × 382.84
  4. Step 4: Simplify right side
    403.36x = 212,598.71
  5. Step 5: Solve for x
    x = 212,598.71/403.36
  6. Step 6: Final answer
    x = 527.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.