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Finding the Fourth Proportional to 607.86, 912.11 and 242.65

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Solution

The fourth proportional to 607.86, 912.11 and 242.65 is: 364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.86 : 912.11 = 242.65 : x
  2. Step 2: Convert to fraction form
    607.86/912.11 = 242.65/x
  3. Step 3: Cross multiply
    607.86x = 912.11 × 242.65
  4. Step 4: Simplify right side
    607.86x = 221,323.49
  5. Step 5: Solve for x
    x = 221,323.49/607.86
  6. Step 6: Final answer
    x = 364.10

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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.