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Finding the Fourth Proportional to 423.69, 632.48 and 369

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Solution

The fourth proportional to 423.69, 632.48 and 369 is: 550.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    423.69 : 632.48 = 369 : x
  2. Step 2: Convert to fraction form
    423.69/632.48 = 369/x
  3. Step 3: Cross multiply
    423.69x = 632.48 × 369
  4. Step 4: Simplify right side
    423.69x = 233,386.04
  5. Step 5: Solve for x
    x = 233,386.04/423.69
  6. Step 6: Final answer
    x = 550.84

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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.