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Finding the Fourth Proportional to 530.18, 731.31 and 333.35

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Solution

The fourth proportional to 530.18, 731.31 and 333.35 is: 459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.18 : 731.31 = 333.35 : x
  2. Step 2: Convert to fraction form
    530.18/731.31 = 333.35/x
  3. Step 3: Cross multiply
    530.18x = 731.31 × 333.35
  4. Step 4: Simplify right side
    530.18x = 243,778.53
  5. Step 5: Solve for x
    x = 243,778.53/530.18
  6. Step 6: Final answer
    x = 459.81

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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.