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Finding the Fourth Proportional to 383.83, 530.02 and 301.31

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Solution

The fourth proportional to 383.83, 530.02 and 301.31 is: 416.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    383.83 : 530.02 = 301.31 : x
  2. Step 2: Convert to fraction form
    383.83/530.02 = 301.31/x
  3. Step 3: Cross multiply
    383.83x = 530.02 × 301.31
  4. Step 4: Simplify right side
    383.83x = 159,702.03
  5. Step 5: Solve for x
    x = 159,702.03/383.83
  6. Step 6: Final answer
    x = 416.07

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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.