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Finding the Fourth Proportional to 530.18, 731.22 and 343.83

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Solution

The fourth proportional to 530.18, 731.22 and 343.83 is: 474.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.18 : 731.22 = 343.83 : x
  2. Step 2: Convert to fraction form
    530.18/731.22 = 343.83/x
  3. Step 3: Cross multiply
    530.18x = 731.22 × 343.83
  4. Step 4: Simplify right side
    530.18x = 251,415.37
  5. Step 5: Solve for x
    x = 251,415.37/530.18
  6. Step 6: Final answer
    x = 474.21

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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.