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Finding the Fourth Proportional to 531.26, 732.95 and 310.18

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Solution

The fourth proportional to 531.26, 732.95 and 310.18 is: 427.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.26 : 732.95 = 310.18 : x
  2. Step 2: Convert to fraction form
    531.26/732.95 = 310.18/x
  3. Step 3: Cross multiply
    531.26x = 732.95 × 310.18
  4. Step 4: Simplify right side
    531.26x = 227,345.59
  5. Step 5: Solve for x
    x = 227,345.59/531.26
  6. Step 6: Final answer
    x = 427.94

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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.