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Finding the Fourth Proportional to 615.12, 920.82 and 565.32

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Solution

The fourth proportional to 615.12, 920.82 and 565.32 is: 846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.12 : 920.82 = 565.32 : x
  2. Step 2: Convert to fraction form
    615.12/920.82 = 565.32/x
  3. Step 3: Cross multiply
    615.12x = 920.82 × 565.32
  4. Step 4: Simplify right side
    615.12x = 520,557.96
  5. Step 5: Solve for x
    x = 520,557.96/615.12
  6. Step 6: Final answer
    x = 846.27

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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.