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Finding the Fourth Proportional to 405.24, 554.93 and 383.04

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Solution

The fourth proportional to 405.24, 554.93 and 383.04 is: 524.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    405.24 : 554.93 = 383.04 : x
  2. Step 2: Convert to fraction form
    405.24/554.93 = 383.04/x
  3. Step 3: Cross multiply
    405.24x = 554.93 × 383.04
  4. Step 4: Simplify right side
    405.24x = 212,560.39
  5. Step 5: Solve for x
    x = 212,560.39/405.24
  6. Step 6: Final answer
    x = 524.53

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.