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Finding the Fourth Proportional to 411.16, 615.67 and 357.07

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Solution

The fourth proportional to 411.16, 615.67 and 357.07 is: 534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    411.16 : 615.67 = 357.07 : x
  2. Step 2: Convert to fraction form
    411.16/615.67 = 357.07/x
  3. Step 3: Cross multiply
    411.16x = 615.67 × 357.07
  4. Step 4: Simplify right side
    411.16x = 219,837.29
  5. Step 5: Solve for x
    x = 219,837.29/411.16
  6. Step 6: Final answer
    x = 534.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.