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Finding the Fourth Proportional to 632.91, 873.48 and 384.29

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Solution

The fourth proportional to 632.91, 873.48 and 384.29 is: 530.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.91 : 873.48 = 384.29 : x
  2. Step 2: Convert to fraction form
    632.91/873.48 = 384.29/x
  3. Step 3: Cross multiply
    632.91x = 873.48 × 384.29
  4. Step 4: Simplify right side
    632.91x = 335,665.26
  5. Step 5: Solve for x
    x = 335,665.26/632.91
  6. Step 6: Final answer
    x = 530.36

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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.