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Finding the Fourth Proportional to 531.07, 732.87 and 298.18

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Solution

The fourth proportional to 531.07, 732.87 and 298.18 is: 411.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.07 : 732.87 = 298.18 : x
  2. Step 2: Convert to fraction form
    531.07/732.87 = 298.18/x
  3. Step 3: Cross multiply
    531.07x = 732.87 × 298.18
  4. Step 4: Simplify right side
    531.07x = 218,527.18
  5. Step 5: Solve for x
    x = 218,527.18/531.07
  6. Step 6: Final answer
    x = 411.48

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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.