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Finding the Fourth Proportional to 632.92, 873.42 and 384.21

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Solution

The fourth proportional to 632.92, 873.42 and 384.21 is: 530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    632.92 : 873.42 = 384.21 : x
  2. Step 2: Convert to fraction form
    632.92/873.42 = 384.21/x
  3. Step 3: Cross multiply
    632.92x = 873.42 × 384.21
  4. Step 4: Simplify right side
    632.92x = 335,576.70
  5. Step 5: Solve for x
    x = 335,576.70/632.92
  6. Step 6: Final answer
    x = 530.20

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1.5x scale

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.