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Finding the Fourth Proportional to 862.42, 1,293.70 and 277.46

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Solution

The fourth proportional to 862.42, 1,293.70 and 277.46 is: 416.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    862.42 : 1,293.70 = 277.46 : x
  2. Step 2: Convert to fraction form
    862.42/1,293.70 = 277.46/x
  3. Step 3: Cross multiply
    862.42x = 1,293.70 × 277.46
  4. Step 4: Simplify right side
    862.42x = 358,950.00
  5. Step 5: Solve for x
    x = 358,950.00/862.42
  6. Step 6: Final answer
    x = 416.21

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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.